diff --git a/Cargo.lock b/Cargo.lock
index 91f75883..01ffc1a4 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2539,6 +2539,7 @@ dependencies = [
  "clojure-reader",
  "crossterm",
  "midly",
+ "once_cell",
  "ratatui",
  "toml",
 ]
@@ -2558,6 +2559,8 @@ dependencies = [
  "tek_chain",
  "tek_core",
  "tek_jack",
+ "tek_plugin",
+ "tek_sampler",
 ]
 
 [[package]]
diff --git a/crates/tek/Cargo.toml b/crates/tek/Cargo.toml
index c578d97d..da7b78a8 100644
--- a/crates/tek/Cargo.toml
+++ b/crates/tek/Cargo.toml
@@ -14,7 +14,7 @@ tek_sampler = { path = "../tek_sampler" }
 tek_sequencer = { path = "../tek_sequencer" }
 tek_timer = { path = "../tek_timer" }
 tek_chain = { path = "../tek_chain" }
-tek_mixer = { path = "../tek_mixer" }
+tek_mixer = { path = "../tek_mixer", features = ["standalone_devices"] }
 #jack = "0.10"
 #crossterm = "0.27"
 #ratatui = { version = "0.26.3", features = [ "unstable-widget-ref", "underline-color" ] }
@@ -32,7 +32,6 @@ tek_mixer = { path = "../tek_mixer" }
 #fraction = "0.15.3"
 #rlsf = "0.2.1"
 #r8brain-rs = "0.3.5"
-#once_cell = "1.19.0"
 
 #symphonia = { version = "0.5.4", features = [ "all" ] }
 
diff --git a/crates/tek/src/control.rs b/crates/tek/src/control.rs
index 646cf486..0a5e8aeb 100644
--- a/crates/tek/src/control.rs
+++ b/crates/tek/src/control.rs
@@ -135,7 +135,7 @@ pub const KEYMAP_GLOBAL: &'static [KeyBinding<App>] = keymap!(App {
 /// Generic key bindings for views that support focus.
 pub const KEYMAP_FOCUS: &'static [KeyBinding<App>] = keymap!(App {
     [Char(';'), NONE, "command", "open command palette", |_: &mut App| {
-        *MODAL.lock().unwrap() = Some(Box::new(crate::devices::help::HelpModal::new()));
+        *MODAL.lock().unwrap() = Some(Box::new(HelpModal::new()));
         Ok(true)
     }],
     [Tab, NONE,  "focus_next", "focus next area",     focus_next],
diff --git a/crates/tek/src/edn.rs b/crates/tek/src/edn.rs
index 64173758..67fffbca 100644
--- a/crates/tek/src/edn.rs
+++ b/crates/tek/src/edn.rs
@@ -14,26 +14,15 @@
 //! * [LV2Plugin::load_edn]
 
 use crate::*;
-use clojure_reader::{edn::{read, Edn}, error::Error as EdnError};
-
-/// EDN parsing helper.
-macro_rules! edn {
-    ($edn:ident { $($pat:pat => $expr:expr),* $(,)? }) => {
-        match $edn { $($pat => $expr),* }
-    };
-    ($edn:ident in $args:ident { $($pat:pat => $expr:expr),* $(,)? }) => {
-        for $edn in $args {
-            edn!($edn { $($pat => $expr),* })
-        }
-    };
-}
 
 impl App {
+
     pub fn from_edn (src: &str) -> Usually<Self> {
         let mut app = Self::new()?;
         app.load_edn(src)?;
         Ok(app)
     }
+
     pub fn load_edn (&mut self, mut src: &str) -> Usually<&mut Self> {
         loop {
             match read(src) {
@@ -55,6 +44,7 @@ impl App {
         }
         Ok(self)
     }
+
     fn load_edn_one <'e> (&mut self, edn: Edn<'e>) -> Usually<()> {
         match edn {
             Edn::List(items) => {
@@ -69,10 +59,10 @@ impl App {
                         }
                     },
                     Some(Edn::Symbol("scene")) => {
-                        tek_sequencer::Scene::load_edn(self, &items[1..])?;
+                        tek_sequencer::Scene::from_edn(self, &items[1..])?;
                     },
                     Some(Edn::Symbol("track")) => {
-                        tek_mixer::Track::load_edn(self, &items[1..])?;
+                        tek_mixer::MixerTrack::from_edn(self, &items[1..])?;
                     },
                     Some(Edn::Symbol("midi-in")) => {
                         self.midi_ins = items[1..].iter().map(|x|match x {
@@ -105,62 +95,5 @@ impl App {
         }
         Ok(())
     }
-}
 
-
-impl Phrase {
-    fn load_edn <'e> (ppq: usize, args: &[Edn<'e>]) -> Usually<Self> {
-        let mut phrase = Self::default();
-        let mut name   = String::new();
-        let mut beats  = 0usize;
-        let mut steps  = 0usize;
-        edn!(edn in args {
-            Edn::Map(map) => {
-                if let Some(Edn::Str(n)) = map.get(&Edn::Key(":name")) {
-                    name = String::from(*n);
-                }
-                if let Some(Edn::Int(b)) = map.get(&Edn::Key(":beats")) {
-                    beats = *b as usize;
-                    phrase.length = ppq * beats;
-                    for _ in phrase.notes.len()..phrase.length {
-                        phrase.notes.push(Vec::with_capacity(16))
-                    }
-                }
-                if let Some(Edn::Int(s)) = map.get(&Edn::Key(":steps")) {
-                    steps = *s as usize;
-                }
-            },
-            Edn::List(args) => {
-                let time = (match args.get(0) {
-                    Some(Edn::Key(text)) => text[1..].parse::<f64>()?,
-                    Some(Edn::Int(i))       => *i as f64,
-                    Some(Edn::Double(f))    => f64::from(*f),
-                    _ => panic!("unexpected in phrase '{name}': {:?}", args.get(0)),
-                } * beats as f64 * ppq as f64 / steps as f64) as usize;
-                for edn in args[1..].iter() {
-                    match edn {
-                        Edn::List(args) => if let (
-                            Some(Edn::Int(key)),
-                            Some(Edn::Int(vel)),
-                        ) = (
-                            args.get(0),
-                            args.get(1),
-                        ) {
-                            let (key, vel) = (
-                                u7::from((*key as u8).min(127)),
-                                u7::from((*vel as u8).min(127)),
-                            );
-                            phrase.notes[time].push(MidiMessage::NoteOn { key, vel })
-                        } else {
-                            panic!("unexpected list in phrase '{name}'")
-                        },
-                        _ => panic!("unexpected in phrase '{name}': {edn:?}")
-                    }
-                }
-            },
-            _ => panic!("unexpected in phrase '{name}': {edn:?}"),
-        });
-        phrase.name = name;
-        Ok(phrase)
-    }
 }
diff --git a/crates/tek/src/setup.rs b/crates/tek/src/setup.rs
index 669a3812..666479c5 100644
--- a/crates/tek/src/setup.rs
+++ b/crates/tek/src/setup.rs
@@ -34,7 +34,7 @@ render!(SetupModal |self, buf, area| {
     Ok(area)
 });
 handle!(SetupModal |self, e| {
-    if let AppEvent::Input(::crossterm::event::Event::Key(KeyEvent {
+    if let AppEvent::Input(Event::Key(KeyEvent {
         code: KeyCode::Enter,
         ..
     })) = e {
diff --git a/crates/tek_core/Cargo.toml b/crates/tek_core/Cargo.toml
index 4a49e7b8..57540625 100644
--- a/crates/tek_core/Cargo.toml
+++ b/crates/tek_core/Cargo.toml
@@ -12,3 +12,4 @@ better-panic = "0.3.0"
 midly = "0.5"
 clap = { version = "4.5.4", features = [ "derive" ] }
 clojure-reader = "0.1.0"
+once_cell = "1.19.0"
diff --git a/crates/tek_core/src/lib.rs b/crates/tek_core/src/lib.rs
index 875ffe19..c156a32e 100644
--- a/crates/tek_core/src/lib.rs
+++ b/crates/tek_core/src/lib.rs
@@ -8,6 +8,7 @@ pub use crossterm::event::{Event, KeyEvent, KeyCode, KeyModifiers};
 pub use ratatui::prelude::{Rect, Style, Color, Buffer};
 pub use ratatui::style::Stylize;
 pub use clojure_reader::{edn::{read, Edn}, error::Error as EdnError};
+pub use once_cell::sync::Lazy;
 
 pub(crate) use std::error::Error;
 pub(crate) use std::io::{stdout};
diff --git a/crates/tek_mixer/Cargo.toml b/crates/tek_mixer/Cargo.toml
index bee666fd..1c993154 100644
--- a/crates/tek_mixer/Cargo.toml
+++ b/crates/tek_mixer/Cargo.toml
@@ -7,6 +7,11 @@ version = "0.1.0"
 tek_core = { path = "../tek_core" }
 tek_jack = { path = "../tek_jack" }
 tek_chain = { path = "../tek_chain" }
+tek_sampler = { path = "../tek_sampler", optional = true }
+tek_plugin = { path = "../tek_plugin", optional = true }
+
+[features]
+standalone_devices = [ "tek_sampler", "tek_plugin" ]
 
 [lib]
 path = "src/lib.rs"
diff --git a/crates/tek_mixer/src/mixer.rs b/crates/tek_mixer/src/mixer.rs
index d01203c5..a317241b 100644
--- a/crates/tek_mixer/src/mixer.rs
+++ b/crates/tek_mixer/src/mixer.rs
@@ -23,18 +23,14 @@ impl Mixer {
             name: name.into(),
             selected_column: 0,
             selected_track:  1,
-            tracks: vec![
-                MixerTrack::new(&client, 1, "Mono 1")?,
-                MixerTrack::new(&client, 1, "Mono 2")?,
-                MixerTrack::new(&client, 2, "Stereo 1")?,
-                MixerTrack::new(&client, 2, "Stereo 2")?,
-                MixerTrack::new(&client, 2, "Stereo 3")?,
-                MixerTrack::new(&client, 2, "Bus 1")?,
-                MixerTrack::new(&client, 2, "Bus 2")?,
-                MixerTrack::new(&client, 2, "Mix")?,
-            ],
+            tracks: vec![],
         })
     }
+    pub fn add_track (&mut self, name: &str, channels: usize) -> Usually<&mut Self> {
+        let track = MixerTrack::new(name, channels)?;
+        self.tracks.push(track);
+        Ok(self)
+    }
 }
 
 fn process (
diff --git a/crates/tek_mixer/src/mixer_track.rs b/crates/tek_mixer/src/mixer_track.rs
index 24f0a5a8..050d151f 100644
--- a/crates/tek_mixer/src/mixer_track.rs
+++ b/crates/tek_mixer/src/mixer_track.rs
@@ -1,94 +1,124 @@
 use crate::*;
 use tek_core::edn;
+#[cfg(feature = "standalone_devices")]
+use tek_sampler::*;
+#[cfg(feature = "standalone_devices")]
+use tek_plugin::*;
 
-/// TODO: A track in the mixer. (Integrate with [crate::model::Track]?)
+/// A track in the mixer.
 pub struct MixerTrack {
-    pub name:              String,
-    pub channels:          u8,
-    pub input_ports:       Vec<Port<AudioIn>>,
-    pub pre_gain_meter:    f64,
-    pub gain:              f64,
-    pub insert_ports:      Vec<Port<AudioOut>>,
-    pub return_ports:      Vec<Port<AudioIn>>,
-    pub post_gain_meter:   f64,
-    pub post_insert_meter: f64,
-    pub level:             f64,
-    pub pan:               f64,
-    pub output_ports:      Vec<Port<AudioOut>>,
-    pub post_fader_meter:  f64,
-    pub route:             String,
+    pub name:    String,
+    pub ports:   JackPorts,
+    pub devices: Vec<JackDevice>,
+    //pub channels:          u8,
+    //pub input_ports:       Vec<Port<AudioIn>>,
+    //pub pre_gain_meter:    f64,
+    //pub gain:              f64,
+    //pub insert_ports:      Vec<Port<AudioOut>>,
+    //pub return_ports:      Vec<Port<AudioIn>>,
+    //pub post_gain_meter:   f64,
+    //pub post_insert_meter: f64,
+    //pub level:             f64,
+    //pub pan:               f64,
+    //pub output_ports:      Vec<Port<AudioOut>>,
+    //pub post_fader_meter:  f64,
+    //pub route:             String,
 }
 
 impl MixerTrack {
-    pub fn new (jack: &Client, channels: u8, name: &str) -> Usually<Self> {
-        let mut input_ports  = vec![];
-        let mut insert_ports = vec![];
-        let mut return_ports = vec![];
-        let mut output_ports = vec![];
-        for channel in 1..=channels {
-            input_ports.push(jack.register_port(&format!("{name} [input {channel}]"),   AudioIn::default())?);
-            output_ports.push(jack.register_port(&format!("{name} [out {channel}]"),    AudioOut::default())?);
-            let insert_port = jack.register_port(&format!("{name} [pre {channel}]"),    AudioOut::default())?;
-            let return_port = jack.register_port(&format!("{name} [insert {channel}]"), AudioIn::default())?;
-            jack.connect_ports(&insert_port, &return_port)?;
-            insert_ports.push(insert_port);
-            return_ports.push(return_port);
-        }
-        Ok(Self {
-            name:              name.into(),
-            channels,
-            input_ports,
-            pre_gain_meter:    0.0,
-            gain:              0.0,
-            post_gain_meter:   0.0,
-            insert_ports,
-            return_ports,
-            post_insert_meter: 0.0,
-            level:             0.0,
-            pan:               0.0,
-            post_fader_meter:  0.0,
-            route:             "---".into(),
-            output_ports,
-        })
-    }
-}
 
-impl MixerTrack {
-    fn load_edn <'a, 'e> (app: &'a mut App, args: &[Edn<'e>]) -> Usually<&'a mut Self> {
-        let ppq = app.transport.ppq();
-        let mut name = None;
+    const SYM_NAME:    &'static str = ":name";
+    const SYM_GAIN:    &'static str = ":gain";
+    const SYM_SAMPLER: &'static str = "sampler";
+    const SYM_LV2:     &'static str = "lv2";
+
+    pub fn from_edn <'a, 'e> (args: &[Edn<'e>]) -> Usually<Self> {
         let mut _gain = 0.0f64;
+        let mut track = MixerTrack::new("", 0)?;
+        #[allow(unused_mut)]
         let mut devices: Vec<JackDevice> = vec![];
         edn!(edn in args {
             Edn::Map(map) => {
-                if let Some(Edn::Str(n)) = map.get(&Edn::Key(":name")) {
-                    name = Some(*n);
+                if let Some(Edn::Str(n)) = map.get(&Edn::Key(Self::SYM_NAME)) {
+                    track.name = n.to_string();
                 }
-                if let Some(Edn::Double(g)) = map.get(&Edn::Key(":gain")) {
-                    _gain = f64::from(*g)
+                if let Some(Edn::Double(g)) = map.get(&Edn::Key(Self::SYM_GAIN)) {
+                    _gain = f64::from(*g);
                 }
             },
             Edn::List(args) => match args.get(0) {
-                Some(Edn::Symbol("sampler")) => {
-                    devices.push(Sampler::load_edn(&args[1..])?)
+                // Add a sampler device to the track
+                Some(Edn::Symbol(Self::SYM_SAMPLER)) => {
+                    #[cfg(feature = "standalone_devices")]
+                    devices.push(Sampler::from_edn(&args[1..])?);
+                    #[cfg(not(feature = "standalone_devices"))]
+                    panic!(
+                        "unsupported in track {}: {:?}; tek_mixer not compiled with feature \"sampler\"",
+                        &track.name,
+                        args.get(0).unwrap()
+                    )
                 },
-                Some(Edn::Symbol("lv2")) => {
-                    devices.push(LV2Plugin::load_edn(&args[1..])?)
+                // Add a LV2 plugin to the track.
+                Some(Edn::Symbol(Self::SYM_LV2)) => {
+                    #[cfg(feature = "standalone_devices")]
+                    devices.push(LV2Plugin::from_edn(&args[1..])?);
+                    #[cfg(not(feature = "standalone_devices"))]
+                    panic!(
+                        "unsupported in track {}: {:?}; tek_mixer not compiled with feature \"plugin\"",
+                        &track.name,
+                        args.get(0).unwrap()
+                    )
                 },
-                None => panic!("empty list track {}",
-                    name.unwrap_or("")
-                ),
-                _ => panic!("unexpected in track {}: {:?}",
-                    name.unwrap_or(""),
-                    args.get(0).unwrap()
-                )
+                None =>
+                    panic!("empty list track {}", &track.name),
+                _ =>
+                    panic!("unexpected in track {}: {:?}", &track.name, args.get(0).unwrap())
             },
             _ => {}
         });
-        let track = app.arranger.track_add(name)?;
-        for device in devices { track.add_device(device)?; }
+        for device in devices {
+            track.add_device(device);
+        }
         Ok(track)
     }
+
+    pub fn new (name: &str, channels: usize) -> Usually<Self> {
+        Ok(Self {
+            name:    name.into(),
+            ports:   JackPorts::default(),
+            devices: vec![],
+            //channels,
+            //input_ports,
+            //pre_gain_meter:    0.0,
+            //gain:              0.0,
+            //post_gain_meter:   0.0,
+            //insert_ports,
+            //return_ports,
+            //post_insert_meter: 0.0,
+            //level:             0.0,
+            //pan:               0.0,
+            //post_fader_meter:  0.0,
+            //route:             "---".into(),
+            //output_ports,
+        })
+        //let mut input_ports  = vec![];
+        //let mut insert_ports = vec![];
+        //let mut return_ports = vec![];
+        //let mut output_ports = vec![];
+        //for channel in 1..=channels {
+            //input_ports.push(jack.register_port(&format!("{name} [input {channel}]"),   AudioIn::default())?);
+            //output_ports.push(jack.register_port(&format!("{name} [out {channel}]"),    AudioOut::default())?);
+            //let insert_port = jack.register_port(&format!("{name} [pre {channel}]"),    AudioOut::default())?;
+            //let return_port = jack.register_port(&format!("{name} [insert {channel}]"), AudioIn::default())?;
+            //jack.connect_ports(&insert_port, &return_port)?;
+            //insert_ports.push(insert_port);
+            //return_ports.push(return_port);
+        //}
+    }
+
+    pub fn add_device (&mut self, device: JackDevice) {
+        self.devices.push(device);
+    }
 }
 
 //impl<W: Write> Input<TUI<W>, bool> for Mixer {
diff --git a/crates/tek_plugin/src/lv2.rs b/crates/tek_plugin/src/lv2.rs
index 308bf3a2..f149f65e 100644
--- a/crates/tek_plugin/src/lv2.rs
+++ b/crates/tek_plugin/src/lv2.rs
@@ -1,5 +1,4 @@
 use super::*;
-
 use ::livi::{
     World,
     Instance,
@@ -9,33 +8,7 @@ use ::livi::{
     Port,
     event::LV2AtomSequence,
 };
-
-use ::winit::{
-    application::ApplicationHandler,
-    event::WindowEvent,
-    event_loop::{ActiveEventLoop, ControlFlow, EventLoop},
-    window::{Window, WindowId},
-    platform::x11::EventLoopBuilderExtX11
-};
-
-use ::suil_rs::{self};
-
-use std::thread::{spawn, JoinHandle};
-
-impl Plugin {
-    pub fn lv2 (name: &str, path: &str) -> Usually<JackDevice> {
-        let plugin = LV2Plugin::new(path)?;
-        jack_from_lv2(name, &plugin.plugin)?
-            .run(|ports|Box::new(Self {
-                name:       name.into(),
-                path:       Some(String::from(path)),
-                plugin:     Some(PluginKind::LV2(plugin)),
-                selected:   0,
-                mapping:    false,
-                ports
-            }))
-    }
-}
+use std::thread::JoinHandle;
 
 /// A LV2 plugin.
 pub struct LV2Plugin {
@@ -49,6 +22,22 @@ pub struct LV2Plugin {
 }
 
 impl LV2Plugin {
+    pub fn from_edn <'e> (args: &[Edn<'e>]) -> Usually<JackDevice> {
+        let mut name = String::new();
+        let mut path = String::new();
+        edn!(edn in args {
+            Edn::Map(map) => {
+                if let Some(Edn::Str(n)) = map.get(&Edn::Key(":name")) {
+                    name = String::from(*n);
+                }
+                if let Some(Edn::Str(p)) = map.get(&Edn::Key(":path")) {
+                    path = String::from(*p);
+                }
+            },
+            _ => panic!("unexpected in lv2 '{name}'"),
+        });
+        Plugin::new_lv2(&name, &path)
+    }
     pub fn new (uri: &str) -> Usually<Self> {
         // Get 1st plugin at URI
         let world    = World::with_load_bundle(&uri);
@@ -84,62 +73,3 @@ impl LV2Plugin {
         })
     }
 }
-
-pub fn run_lv2_ui (mut ui: LV2PluginUI) -> Usually<JoinHandle<()>> {
-    Ok(spawn(move||{
-        let event_loop = EventLoop::builder().with_x11().with_any_thread(true).build().unwrap();
-        event_loop.set_control_flow(ControlFlow::Wait);
-        event_loop.run_app(&mut ui).unwrap()
-    }))
-}
-
-/// A LV2 plugin's X11 UI.
-pub struct LV2PluginUI {
-    pub window: Option<Window>
-}
-
-impl LV2PluginUI {
-    pub fn new () -> Usually<Self> {
-        Ok(Self { window: None })
-    }
-}
-
-impl ApplicationHandler for LV2PluginUI {
-    fn resumed (&mut self, event_loop: &ActiveEventLoop) {
-        self.window = Some(event_loop.create_window(Window::default_attributes()).unwrap());
-    }
-    fn window_event (&mut self, event_loop: &ActiveEventLoop, id: WindowId, event: WindowEvent) {
-        match event {
-            WindowEvent::CloseRequested => {
-                self.window.as_ref().unwrap().set_visible(false);
-                event_loop.exit();
-            },
-            WindowEvent::RedrawRequested => {
-                self.window.as_ref().unwrap().request_redraw();
-            }
-            _ => (),
-        }
-    }
-}
-
-fn lv2_ui_instantiate (kind: &str) {
-    //let host = Suil
-}
-
-pub fn jack_from_lv2 (name: &str, plugin: &::livi::Plugin) -> Usually<Jack> {
-    let counts = plugin.port_counts();
-    let mut jack = Jack::new(name)?;
-    for i in 0..counts.atom_sequence_inputs {
-        jack = jack.midi_in(&format!("midi-in-{i}"))
-    }
-    for i in 0..counts.atom_sequence_outputs {
-        jack = jack.midi_out(&format!("midi-out-{i}"));
-    }
-    for i in 0..counts.audio_inputs {
-        jack = jack.audio_in(&format!("audio-in-{i}"));
-    }
-    for i in 0..counts.audio_outputs {
-        jack = jack.audio_out(&format!("audio-out-{i}"));
-    }
-    Ok(jack)
-}
diff --git a/crates/tek_plugin/src/lv2_edn.rs b/crates/tek_plugin/src/lv2_edn.rs
deleted file mode 100644
index 99eff76c..00000000
--- a/crates/tek_plugin/src/lv2_edn.rs
+++ /dev/null
@@ -1,20 +0,0 @@
-use crate::*;
-impl LV2Plugin {
-    fn load_edn <'e> (args: &[Edn<'e>]) -> Usually<JackDevice> {
-        let mut name = String::new();
-        let mut path = String::new();
-        edn!(edn in args {
-            Edn::Map(map) => {
-                if let Some(Edn::Str(n)) = map.get(&Edn::Key(":name")) {
-                    name = String::from(*n);
-                }
-                if let Some(Edn::Str(p)) = map.get(&Edn::Key(":path")) {
-                    path = String::from(*p);
-                }
-            },
-            _ => panic!("unexpected in lv2 '{name}'"),
-        });
-        Plugin::lv2(&name, &path)
-    }
-}
-
diff --git a/crates/tek_plugin/src/lv2_gui.rs b/crates/tek_plugin/src/lv2_gui.rs
index 4c70aa29..f096c048 100644
--- a/crates/tek_plugin/src/lv2_gui.rs
+++ b/crates/tek_plugin/src/lv2_gui.rs
@@ -1,4 +1,12 @@
-
+use crate::*;
+use std::thread::{spawn, JoinHandle};
+use ::winit::{
+    application::ApplicationHandler,
+    event::WindowEvent,
+    event_loop::{ActiveEventLoop, ControlFlow, EventLoop},
+    window::{Window, WindowId},
+    platform::x11::EventLoopBuilderExtX11
+};
 
 //pub struct LV2PluginUI {
     //write:      (),
@@ -7,3 +15,62 @@
     //features:   (),
     //transfer:   (),
 //}
+
+pub fn run_lv2_ui (mut ui: LV2PluginUI) -> Usually<JoinHandle<()>> {
+    Ok(spawn(move||{
+        let event_loop = EventLoop::builder().with_x11().with_any_thread(true).build().unwrap();
+        event_loop.set_control_flow(ControlFlow::Wait);
+        event_loop.run_app(&mut ui).unwrap()
+    }))
+}
+
+/// A LV2 plugin's X11 UI.
+pub struct LV2PluginUI {
+    pub window: Option<Window>
+}
+
+impl LV2PluginUI {
+    pub fn new () -> Usually<Self> {
+        Ok(Self { window: None })
+    }
+}
+
+impl ApplicationHandler for LV2PluginUI {
+    fn resumed (&mut self, event_loop: &ActiveEventLoop) {
+        self.window = Some(event_loop.create_window(Window::default_attributes()).unwrap());
+    }
+    fn window_event (&mut self, event_loop: &ActiveEventLoop, id: WindowId, event: WindowEvent) {
+        match event {
+            WindowEvent::CloseRequested => {
+                self.window.as_ref().unwrap().set_visible(false);
+                event_loop.exit();
+            },
+            WindowEvent::RedrawRequested => {
+                self.window.as_ref().unwrap().request_redraw();
+            }
+            _ => (),
+        }
+    }
+}
+
+fn lv2_ui_instantiate (kind: &str) {
+    //let host = Suil
+}
+
+pub fn jack_from_lv2 (name: &str, plugin: &::livi::Plugin) -> Usually<Jack> {
+    let counts = plugin.port_counts();
+    let mut jack = Jack::new(name)?;
+    for i in 0..counts.atom_sequence_inputs {
+        jack = jack.midi_in(&format!("midi-in-{i}"))
+    }
+    for i in 0..counts.atom_sequence_outputs {
+        jack = jack.midi_out(&format!("midi-out-{i}"));
+    }
+    for i in 0..counts.audio_inputs {
+        jack = jack.audio_in(&format!("audio-in-{i}"));
+    }
+    for i in 0..counts.audio_outputs {
+        jack = jack.audio_out(&format!("audio-out-{i}"));
+    }
+    Ok(jack)
+}
diff --git a/crates/tek_plugin/src/plugin.rs b/crates/tek_plugin/src/plugin.rs
index eb950e28..bc3803a2 100644
--- a/crates/tek_plugin/src/plugin.rs
+++ b/crates/tek_plugin/src/plugin.rs
@@ -23,6 +23,18 @@ pub enum PluginKind {
 }
 
 impl Plugin {
+    pub fn new_lv2 (name: &str, path: &str) -> Usually<JackDevice> {
+        let plugin = LV2Plugin::new(path)?;
+        jack_from_lv2(name, &plugin.plugin)?
+            .run(|ports|Box::new(Self {
+                name:       name.into(),
+                path:       Some(String::from(path)),
+                plugin:     Some(PluginKind::LV2(plugin)),
+                selected:   0,
+                mapping:    false,
+                ports
+            }))
+    }
     /// Create a plugin host device.
     pub fn new (name: &str) -> Usually<Self> {
         Ok(Self {
diff --git a/crates/tek_sampler/src/sample.rs b/crates/tek_sampler/src/sample.rs
index fa4ca3ab..015f6178 100644
--- a/crates/tek_sampler/src/sample.rs
+++ b/crates/tek_sampler/src/sample.rs
@@ -11,6 +11,31 @@ pub struct Sample {
 }
 
 impl Sample {
+    pub fn from_edn <'e> (dir: &str, args: &[Edn<'e>]) -> Usually<(Option<u7>, Arc<RwLock<Self>>)> {
+        let mut name = String::new();
+        let mut file = String::new();
+        let mut midi = None;
+        let mut start = 0usize;
+        edn!(edn in args {
+            Edn::Map(map) => {
+                if let Some(Edn::Str(n)) = map.get(&Edn::Key(":name")) {
+                    name = String::from(*n);
+                }
+                if let Some(Edn::Str(f)) = map.get(&Edn::Key(":file")) {
+                    file = String::from(*f);
+                }
+                if let Some(Edn::Int(i)) = map.get(&Edn::Key(":start")) {
+                    start = *i as usize;
+                }
+                if let Some(Edn::Int(m)) = map.get(&Edn::Key(":midi")) {
+                    midi = Some(u7::from(*m as u8));
+                }
+            },
+            _ => panic!("unexpected in sample {name}"),
+        });
+        let (end, data) = read_sample_data(&format!("{dir}/{file}"))?;
+        Ok((midi, Arc::new(RwLock::new(Self::new(&name, start, end, data)))))
+    }
     pub fn new (name: &str, start: usize, end: usize, channels: Vec<Vec<f32>>) -> Self {
         Self { name: name.to_string(), start, end, channels, rate: None }
     }
diff --git a/crates/tek_sampler/src/sampler.rs b/crates/tek_sampler/src/sampler.rs
index 7ed25c30..73a7dd64 100644
--- a/crates/tek_sampler/src/sampler.rs
+++ b/crates/tek_sampler/src/sampler.rs
@@ -98,8 +98,36 @@ pub const KEYMAP_SAMPLER: &'static [KeyBinding<Sampler>] = keymap!(Sampler {
     }],
 });
 
-
 impl Sampler {
+    pub fn from_edn <'e> (args: &[Edn<'e>]) -> Usually<JackDevice> {
+        let mut name = String::new();
+        let mut dir  = String::new();
+        let mut samples = BTreeMap::new();
+        edn!(edn in args {
+            Edn::Map(map) => {
+                if let Some(Edn::Str(n)) = map.get(&Edn::Key(":name")) {
+                    name = String::from(*n);
+                }
+                if let Some(Edn::Str(n)) = map.get(&Edn::Key(":dir")) {
+                    dir = String::from(*n);
+                }
+            },
+            Edn::List(args) => match args.get(0) {
+                Some(Edn::Symbol("sample")) => {
+                    let (midi, sample) = Sample::from_edn(&dir, &args[1..])?;
+                    if let Some(midi) = midi {
+                        samples.insert(midi, sample);
+                    } else {
+                        panic!("sample without midi binding: {}", sample.read().unwrap().name);
+                    }
+                },
+                _ => panic!("unexpected in sampler {name}: {args:?}")
+            },
+            _ => panic!("unexpected in sampler {name}: {edn:?}")
+        });
+        Self::new(&name, Some(samples))
+    }
+
     pub fn new (name: &str, mapped: Option<BTreeMap<u7, Arc<RwLock<Sample>>>>) -> Usually<JackDevice> {
         Jack::new(name)?
             .midi_in("midi")
diff --git a/crates/tek_sampler/src/sampler_edn.rs b/crates/tek_sampler/src/sampler_edn.rs
index d6501292..190062c9 100644
--- a/crates/tek_sampler/src/sampler_edn.rs
+++ b/crates/tek_sampler/src/sampler_edn.rs
@@ -1,60 +1,7 @@
 use crate::*;
 
 impl Sampler {
-    fn load_edn <'e> (args: &[Edn<'e>]) -> Usually<JackDevice> {
-        let mut name = String::new();
-        let mut dir  = String::new();
-        let mut samples = BTreeMap::new();
-        edn!(edn in args {
-            Edn::Map(map) => {
-                if let Some(Edn::Str(n)) = map.get(&Edn::Key(":name")) {
-                    name = String::from(*n);
-                }
-                if let Some(Edn::Str(n)) = map.get(&Edn::Key(":dir")) {
-                    dir = String::from(*n);
-                }
-            },
-            Edn::List(args) => match args.get(0) {
-                Some(Edn::Symbol("sample")) => {
-                    let (midi, sample) = Sample::load_edn(&dir, &args[1..])?;
-                    if let Some(midi) = midi {
-                        samples.insert(midi, sample);
-                    } else {
-                        panic!("sample without midi binding: {}", sample.read().unwrap().name);
-                    }
-                },
-                _ => panic!("unexpected in sampler {name}: {args:?}")
-            },
-            _ => panic!("unexpected in sampler {name}: {edn:?}")
-        });
-        Self::new(&name, Some(samples))
-    }
 }
 
 impl Sample {
-    fn load_edn <'e> (dir: &str, args: &[Edn<'e>]) -> Usually<(Option<u7>, Arc<RwLock<Self>>)> {
-        let mut name = String::new();
-        let mut file = String::new();
-        let mut midi = None;
-        let mut start = 0usize;
-        edn!(edn in args {
-            Edn::Map(map) => {
-                if let Some(Edn::Str(n)) = map.get(&Edn::Key(":name")) {
-                    name = String::from(*n);
-                }
-                if let Some(Edn::Str(f)) = map.get(&Edn::Key(":file")) {
-                    file = String::from(*f);
-                }
-                if let Some(Edn::Int(i)) = map.get(&Edn::Key(":start")) {
-                    start = *i as usize;
-                }
-                if let Some(Edn::Int(m)) = map.get(&Edn::Key(":midi")) {
-                    midi = Some(u7::from(*m as u8));
-                }
-            },
-            _ => panic!("unexpected in sample {name}"),
-        });
-        let (end, data) = read_sample_data(&format!("{dir}/{file}"))?;
-        Ok((midi, Arc::new(RwLock::new(Self::new(&name, start, end, data)))))
-    }
 }
diff --git a/crates/tek_sequencer/src/phrase_edn.rs b/crates/tek_sequencer/src/phrase_edn.rs
index 1e798e92..111dbeca 100644
--- a/crates/tek_sequencer/src/phrase_edn.rs
+++ b/crates/tek_sequencer/src/phrase_edn.rs
@@ -56,3 +56,60 @@ impl Phrase {
         Ok(phrase)
     }
 }
+
+//impl Phrase {
+    //fn from_edn <'e> (ppq: usize, args: &[Edn<'e>]) -> Usually<Self> {
+        //let mut phrase = Self::default();
+        //let mut name   = String::new();
+        //let mut beats  = 0usize;
+        //let mut steps  = 0usize;
+        //edn!(edn in args {
+            //Edn::Map(map) => {
+                //if let Some(Edn::Str(n)) = map.get(&Edn::Key(":name")) {
+                    //name = String::from(*n);
+                //}
+                //if let Some(Edn::Int(b)) = map.get(&Edn::Key(":beats")) {
+                    //beats = *b as usize;
+                    //phrase.length = ppq * beats;
+                    //for _ in phrase.notes.len()..phrase.length {
+                        //phrase.notes.push(Vec::with_capacity(16))
+                    //}
+                //}
+                //if let Some(Edn::Int(s)) = map.get(&Edn::Key(":steps")) {
+                    //steps = *s as usize;
+                //}
+            //},
+            //Edn::List(args) => {
+                //let time = (match args.get(0) {
+                    //Some(Edn::Key(text)) => text[1..].parse::<f64>()?,
+                    //Some(Edn::Int(i))       => *i as f64,
+                    //Some(Edn::Double(f))    => f64::from(*f),
+                    //_ => panic!("unexpected in phrase '{name}': {:?}", args.get(0)),
+                //} * beats as f64 * ppq as f64 / steps as f64) as usize;
+                //for edn in args[1..].iter() {
+                    //match edn {
+                        //Edn::List(args) => if let (
+                            //Some(Edn::Int(key)),
+                            //Some(Edn::Int(vel)),
+                        //) = (
+                            //args.get(0),
+                            //args.get(1),
+                        //) {
+                            //let (key, vel) = (
+                                //u7::from((*key as u8).min(127)),
+                                //u7::from((*vel as u8).min(127)),
+                            //);
+                            //phrase.notes[time].push(MidiMessage::NoteOn { key, vel })
+                        //} else {
+                            //panic!("unexpected list in phrase '{name}'")
+                        //},
+                        //_ => panic!("unexpected in phrase '{name}': {edn:?}")
+                    //}
+                //}
+            //},
+            //_ => panic!("unexpected in phrase '{name}': {edn:?}"),
+        //});
+        //phrase.name = name;
+        //Ok(phrase)
+    //}
+//}