diff --git a/src/core/device.rs b/src/core/device.rs
index 18f9d6ba..10b48f81 100644
--- a/src/core/device.rs
+++ b/src/core/device.rs
@@ -16,7 +16,7 @@ pub struct DynamicDevice<T> {
     pub render:  Mutex<Box<dyn FnMut(&T, &mut Buffer, Rect)->Usually<Rect> + Send>>,
     pub handle:  Arc<Mutex<Box<dyn FnMut(&mut T, &AppEvent)->Usually<bool> + Send>>>,
     pub process: Arc<Mutex<Box<dyn FnMut(&mut T, &Client, &ProcessScope)->Control + Send>>>,
-    pub client: Option<DynamicAsyncClient>
+    pub client:  Option<DynamicAsyncClient>
 }
 
 impl<T> Handle for DynamicDevice<T> {
@@ -46,10 +46,6 @@ impl<T: PortList + Send + Sync + 'static> PortList for DynamicDevice<T> {
     }
 }
 
-type DynamicAsyncClient    = AsyncClient<DynamicNotifications, DynamicProcessHandler>;
-type DynamicNotifications  = Notifications<Box<dyn Fn(AppEvent) + Send + Sync>>;
-type DynamicProcessHandler = ClosureProcessHandler<BoxedProcessHandler>;
-
 impl<T: Send + Sync + 'static> DynamicDevice<T> {
     pub fn new <'a, R, H, P> (render: R, handle: H, process: P, state: T) -> Self where
         R: FnMut(&T, &mut Buffer, Rect)    -> Usually<Rect> + Send + 'static,
diff --git a/src/core/jack.rs b/src/core/jack.rs
index 8ae5ae62..71dbec7e 100644
--- a/src/core/jack.rs
+++ b/src/core/jack.rs
@@ -1,13 +1,37 @@
 use crate::core::*;
 
-pub type BoxedNotificationHandler =
-    Box<dyn Fn(AppEvent) + Send>;
+pub trait Process {
+    fn process (&mut self, c: &Client, s: &ProcessScope) -> Control;
+}
+
+pub type DynamicAsyncClient =
+    AsyncClient<DynamicNotifications, DynamicProcessHandler>;
+
+pub type DynamicNotifications =
+    Notifications<Box<dyn Fn(AppEvent) + Send + Sync>>;
+
+pub type DynamicProcessHandler =
+    ClosureProcessHandler<BoxedProcessHandler>;
 
 pub type BoxedProcessHandler =
     Box<dyn FnMut(&Client, &ProcessScope)-> Control + Send>;
 
-pub type Jack<N> =
-    AsyncClient<N, ClosureProcessHandler<BoxedProcessHandler>>;
+pub fn jack_run <T> (name: &str, app: &Arc<Mutex<T>>) -> Usually<DynamicAsyncClient>
+    where T: Handle + Process + Send + 'static
+{
+    let options = ClientOptions::NO_START_SERVER;
+    let (client, _status) = Client::new(name, options)?;
+    Ok(client.activate_async(
+        Notifications(Box::new({
+            let app = app.clone();
+            move|event|{app.lock().unwrap().handle(&event).unwrap();}
+        }) as Box<dyn Fn(AppEvent) + Send + Sync>),
+        ClosureProcessHandler::new(Box::new({
+            let app = app.clone();
+            move|c: &Client, s: &ProcessScope|{app.lock().unwrap().process(c, s)}
+        }) as BoxedProcessHandler)
+    )?)
+}
 
 pub use ::jack::{
     AsyncClient,
diff --git a/src/core/mod.rs b/src/core/mod.rs
index afeffb8a..2332b938 100644
--- a/src/core/mod.rs
+++ b/src/core/mod.rs
@@ -1,33 +1,20 @@
-pub type Usually<T> = Result<T, Box<dyn Error>>;
-
-macro_rules! submod {
-    ($($name:ident)*) => { $(mod $name; pub use self::$name::*;)* };
-}
-
-submod!( device handle jack keymap port render run time );
-
 pub use std::error::Error;
 pub use std::io::{stdout, Stdout, Write};
 pub use std::thread::{spawn, JoinHandle};
 pub use std::time::Duration;
 pub use std::collections::BTreeMap;
-pub use std::sync::{
-    Arc, Mutex, MutexGuard,
-    atomic::{Ordering, AtomicBool, AtomicUsize}, 
-    mpsc::{self, channel, Sender, Receiver}
-};
+pub use std::sync::{Arc, Mutex, MutexGuard};
+pub use std::sync::atomic::{Ordering, AtomicBool, AtomicUsize};
+pub use std::sync::mpsc::{channel, Sender, Receiver};
+pub use ratatui::prelude::*;
+pub use midly::{MidiMessage, live::LiveEvent, num::u7};
+pub use crossterm::{ExecutableCommand, QueueableCommand};
+pub use crossterm::event::{Event, KeyEvent, KeyCode, KeyModifiers};
 
-pub use ::crossterm::{
-    ExecutableCommand, QueueableCommand,
-    event::{Event, KeyEvent, KeyCode, KeyModifiers},
-    terminal::{
-        self,
-        Clear, ClearType,
-        EnterAlternateScreen, LeaveAlternateScreen,
-        enable_raw_mode, disable_raw_mode
-    },
-};
+macro_rules! submod { ($($name:ident)*) => { $(mod $name; pub use self::$name::*;)* }; }
+
+submod!( device handle jack keymap port render run time );
+
+pub type Usually<T> = Result<T, Box<dyn Error>>;
 
-pub use ::ratatui::prelude::*;
-pub use ::midly::{MidiMessage, live::LiveEvent, num::u7};
 pub use crate::{key, keymap};
diff --git a/src/core/render.rs b/src/core/render.rs
index d3ba4293..7ec278fa 100644
--- a/src/core/render.rs
+++ b/src/core/render.rs
@@ -21,6 +21,16 @@ pub trait Render {
     fn max_height (&self) -> u16 {
         u16::MAX
     }
+
+    //fn boxed (self) -> Box<dyn Render> where Self: Sized + 'static {
+        //Box::new(self)
+    //}
+}
+
+impl<T: Fn(&mut Buffer, Rect) -> Usually<Rect>> Render for T {
+    fn render (&self, b: &mut Buffer, a: Rect) -> Usually<Rect> {
+        (*self).render(b, a)
+    }
 }
 
 impl Render for Box<dyn Device> {
diff --git a/src/core/run.rs b/src/core/run.rs
index 3a1f84bb..39ecdb80 100644
--- a/src/core/run.rs
+++ b/src/core/run.rs
@@ -1,13 +1,21 @@
 use crate::core::*;
+use crossterm::terminal::{
+    EnterAlternateScreen, LeaveAlternateScreen,
+    enable_raw_mode, disable_raw_mode
+};
 
 pub trait Run: Render + Handle + Send + Sized + 'static {
-    fn run (self) -> Usually<()> {
+    fn run (self, callback: Option<impl FnOnce(Arc<Mutex<Self>>)->Usually<()>>) -> Usually<()> {
         let device = Arc::new(Mutex::new(self));
         let exited = Arc::new(AtomicBool::new(false));
         let _input_thread = input_thread(&exited, &device);
         terminal_setup()?;
         panic_hook_setup();
-        main_thread(&exited, &device)?;
+        let main_thread = main_thread(&exited, &device)?;
+        if let Some(callback) = callback {
+            callback(device);
+        }
+        main_thread.join();
         terminal_teardown()?;
         Ok(())
     }
@@ -67,12 +75,13 @@ pub fn panic_hook_setup () {
 /// Main thread render loop
 pub fn main_thread (
     exited: &Arc<AtomicBool>,
-    device: &Arc<Mutex<impl Render>>
-) -> Usually<()> {
+    device: &Arc<Mutex<impl Render + Send + 'static>>
+) -> Usually<JoinHandle<()>> {
     let exited = exited.clone();
+    let device = device.clone();
     let mut terminal = ratatui::Terminal::new(CrosstermBackend::new(stdout()))?;
     let sleep = std::time::Duration::from_millis(16);
-    loop {
+    Ok(spawn(move || loop {
 
         terminal.draw(|frame|{
             let area   = frame.size();
@@ -86,8 +95,7 @@ pub fn main_thread (
 
         std::thread::sleep(sleep);
 
-    }
-    Ok(())
+    }))
 }
 /// Cleanup
 pub fn terminal_teardown () -> Usually<()> {
diff --git a/src/core/time.rs b/src/core/time.rs
index 7dd99bf6..da54d441 100644
--- a/src/core/time.rs
+++ b/src/core/time.rs
@@ -1,5 +1,6 @@
 use crate::core::*;
 
+#[derive(Default)]
 pub struct Timebase {
     /// Frames per second
     pub rate: ::atomic_float::AtomicF64,
diff --git a/src/device/launcher/grid.rs b/src/device/launcher/grid.rs
index 6a42b045..935173be 100644
--- a/src/device/launcher/grid.rs
+++ b/src/device/launcher/grid.rs
@@ -1,17 +1,36 @@
 use crate::core::*;
 use super::*;
-pub struct LauncherGrid<'a> {
-    state:     &'a Launcher,
-    buf:       &'a mut Buffer,
-    area:      Rect,
-    focused:   bool,
+pub struct SceneGrid<'a> {
+    pub buf:     &'a mut Buffer,
+    pub area:    Rect,
+    pub name:    &'a str,
+    pub focused: bool,
+    pub scenes:  &'a[Scene],
+    pub tracks:  &'a[Track],
+    pub cursor:  &'a(usize, usize),
 }
-impl<'a> LauncherGrid<'a> {
-    pub fn new (state: &'a Launcher, buf: &'a mut Buffer, area: Rect, focused: bool) -> Self {
-        Self { state, buf, area, focused }
+impl<'a> SceneGrid<'a> {
+    pub fn new (
+        buf:     &'a mut Buffer,
+        area:    Rect,
+        name:    &'a str,
+        focused: bool,
+        scenes:  &'a[Scene],
+        tracks:  &'a[Track],
+        cursor:  &'a(usize, usize),
+    ) -> Self {
+        Self {
+            buf,
+            area,
+            name,
+            focused,
+            scenes,
+            tracks,
+            cursor,
+        }
     }
     pub fn draw (&mut self) -> Usually<Rect> {
-        self.area.height = self.state.scenes.len() as u16 + 2;
+        self.area.height = self.scenes.len() as u16 + 2;
         let style = Some(Style::default().green().dim());
         if self.focused {
             let Rect { x, y, width, height } = self.area;
@@ -24,9 +43,9 @@ impl<'a> LauncherGrid<'a> {
             if x >= self.area.x + self.area.width {
                 break
             }
-            self.separator_v(x, i == self.state.cursor.0);
+            self.separator_v(x, i == self.cursor.0);
             x = x + w;
-            self.separator_v(x, i == self.state.cursor.0);
+            self.separator_v(x, i == self.cursor.0);
         }
         let (mut x, y) = (self.area.x, self.area.y);
         for (i, title) in columns.iter().enumerate() {
@@ -34,7 +53,7 @@ impl<'a> LauncherGrid<'a> {
                 break
             }
             title.blit(
-                self.buf, x+1, y, Some(self.highlight(i == self.state.cursor.0).bold())
+                self.buf, x+1, y, Some(self.highlight(i == self.cursor.0).bold())
             );
             if i == 0 {
                 self.scenes(x+1, y + 1);
@@ -49,8 +68,8 @@ impl<'a> LauncherGrid<'a> {
     }
 
     fn column_names (&self) -> Vec<&'a str> {
-        let mut column_names = vec![self.state.name.as_str()];
-        for track in self.state.tracks.iter() {
+        let mut column_names = vec![self.name];
+        for track in self.tracks.iter() {
             column_names.push(track.name.as_str());
         }
         column_names
@@ -63,23 +82,23 @@ impl<'a> LauncherGrid<'a> {
     fn scenes (&mut self, x: u16, y: u16) -> u16 {
         let mut index = 0usize;
         loop {
-            if index >= self.state.scenes.len() {
+            if index >= self.scenes.len() {
                 break
             }
             if y + index as u16 >= self.area.height {
                 break
             }
-            if let Some(scene) = self.state.scenes.get(index) {
+            if let Some(scene) = self.scenes.get(index) {
                 let style = Some(self.highlight(
-                    (0 == self.state.cursor.0) && (index + 1 == self.state.cursor.1)
+                    (0 == self.cursor.0) && (index + 1 == self.cursor.1)
                 ).bold());
                 "⯈".blit(self.buf, x, y + index as u16, style);
                 scene.name.blit(self.buf, x+1, y + index as u16, style);
             }
             index = index + 1;
         }
-        let hi = (0 == self.state.cursor.0) &&
-                 (self.state.scenes.len() + 1 == self.state.cursor.1);
+        let hi = (0 == self.cursor.0) &&
+                 (self.scenes.len() + 1 == self.cursor.1);
         "＋Add scene…".blit(self.buf, x, y + index as u16, Some(if hi {
             self.highlight(true)
         } else {
@@ -91,20 +110,20 @@ impl<'a> LauncherGrid<'a> {
     fn clips (&mut self, x: u16, y: u16, track: usize) -> u16 {
         let mut index = 0;
         loop {
-            if index >= self.state.scenes.len() {
+            if index >= self.scenes.len() {
                 break
             }
             if y + index as u16 >= self.area.height {
                 break
             }
-            if let Some(scene) = self.state.scenes.get(index) {
-                let hi = (track + 1 == self.state.cursor.0) &&
-                         (index + 1 == self.state.cursor.1);
+            if let Some(scene) = self.scenes.get(index) {
+                let hi = (track + 1 == self.cursor.0) &&
+                         (index + 1 == self.cursor.1);
                 let style = Some(self.highlight(hi));
                 let clip  = scene.clips.get(track);
                 let index = index as u16;
                 let label = if let Some(Some(clip)) = clip {
-                    let track  = self.state.tracks[track].sequencer.state();
+                    let track  = self.tracks[track].sequencer.state();
                     let phrase = track.phrases.get(*clip);
                     if let Some(phrase) = phrase {
                         format!("⯈{}", phrase.name)
@@ -118,8 +137,8 @@ impl<'a> LauncherGrid<'a> {
             }
             index = index + 1;
         }
-        let hi = (track + 1 == self.state.cursor.0) &&
-                 (self.state.scenes.len() + 1 == self.state.cursor.1);
+        let hi = (track + 1 == self.cursor.0) &&
+                 (self.scenes.len() + 1 == self.cursor.1);
         " + Add clip".blit(self.buf, x, y + index as u16, Some(if hi {
             self.highlight(true)
         } else {
diff --git a/src/device/launcher/mod.rs b/src/device/launcher/mod.rs
index c922af20..21119ec0 100644
--- a/src/device/launcher/mod.rs
+++ b/src/device/launcher/mod.rs
@@ -1,9 +1,9 @@
 use crate::core::*;
 use crate::layout::*;
 use crate::device::*;
-mod grid;
-pub use self::grid::*; mod handle;
-pub use self::handle::*;
+mod grid;   pub use self::grid::*;
+mod handle; pub use self::handle::*;
+mod scene;  pub use self::scene::*;
 pub struct Launcher {
     name:          String,
     timebase:      Arc<Timebase>,
@@ -20,28 +20,6 @@ pub struct Launcher {
     view:          LauncherView,
     modal:         Option<Box<dyn Modal<Self>>>,
 }
-pub enum LauncherView {
-    Tracks,
-    Sequencer, 
-    Chains
-}
-impl LauncherView {
-    fn is_tracks (&self) -> bool {
-        match self { Self::Tracks => true, _ => false }
-    }
-}
-pub struct Scene {
-    name:  String,
-    clips: Vec<Option<usize>>,
-}
-impl Scene {
-    pub fn new (name: impl AsRef<str>, clips: impl AsRef<[Option<usize>]>) -> Self {
-        Self {
-            name: name.as_ref().into(),
-            clips: clips.as_ref().iter().map(|x|x.clone()).collect()
-        }
-    }
-}
 impl Launcher {
     pub fn new (
         name:     &str,
@@ -144,7 +122,7 @@ impl Launcher {
     }
 }
 impl DynamicDevice<Launcher> {
-    pub fn connect (self, midi_in: &str, audio_outs: &[&str]) -> Usually<Self> {
+    pub fn connect (&self, midi_in: &str, audio_outs: &[&str]) -> Usually<&Self> {
         {
             let state = &self.state();
             let (client, _status) = Client::new(
@@ -197,16 +175,26 @@ pub fn render (state: &Launcher, buf: &mut Buffer, mut area: Rect) -> Usually<Re
         frame:    state.current_frame
     }.render(buf, area)?.height;
 
-    y = y + LauncherGrid::new(
-        state, buf, Rect { x, y, width, height: height/3 }, state.view.is_tracks()
-    ).draw()?.height;
+    y = y + crate::device::launcher::SceneGrid {
+        buf,
+        area:    Rect { x, y, width, height },
+        name:    &state.name,
+        focused: state.view.is_tracks(),
+        scenes:  &state.scenes,
+        tracks:  &state.tracks,
+        cursor:  &state.cursor
+    }.draw()?.height;
 
     y = y + draw_section_chains(
-        state, buf, Rect { x, y, width, height: height/3 }
+        state,
+        buf,
+        Rect { x, y, width, height: height/3 }
     )?.height;
 
     y = y + draw_section_sequencer(
-        state, buf, Rect { x, y, width, height: height - y }
+        state,
+        buf,
+        Rect { x, y, width, height: height - y }
     )?.height;
 
     area.height = y;
@@ -262,14 +250,11 @@ fn draw_section_sequencer (state: &Launcher, buf: &mut Buffer, area: Rect) -> Us
 }
 fn draw_section_chains (state: &Launcher, buf: &mut Buffer, area: Rect) -> Usually<Rect> {
     let style = Some(Style::default().green().dim());
-    match state.view {
-        LauncherView::Chains => {
-            let Rect { x, y, width, height} = area;
-            lozenge_left(buf, x, y, height, style);
-            lozenge_right(buf, x + width - 1, y, height, style);
-        },
-        _ => {},
-    };
+    if state.view.is_chains() {
+        let Rect { x, y, width, height} = area;
+        lozenge_left(buf, x, y, height, style);
+        lozenge_right(buf, x + width - 1, y, height, style);
+    }
     let chain = state.chain();
     let _ = if let Some(chain) = &chain {
         let (_, plugins) = crate::device::chain::draw_as_row(
@@ -281,3 +266,16 @@ fn draw_section_chains (state: &Launcher, buf: &mut Buffer, area: Rect) -> Usual
     };
     Ok(area)
 }
+pub enum LauncherView {
+    Tracks,
+    Sequencer,
+    Chains
+}
+impl LauncherView {
+    fn is_chains (&self) -> bool {
+        match self { Self::Chains => true, _ => false }
+    }
+    fn is_tracks (&self) -> bool {
+        match self { Self::Tracks => true, _ => false }
+    }
+}
diff --git a/src/device/launcher/scene.rs b/src/device/launcher/scene.rs
new file mode 100644
index 00000000..bbb65582
--- /dev/null
+++ b/src/device/launcher/scene.rs
@@ -0,0 +1,13 @@
+pub struct Scene {
+    pub name:  String,
+    pub clips: Vec<Option<usize>>,
+}
+
+impl Scene {
+    pub fn new (name: impl AsRef<str>, clips: impl AsRef<[Option<usize>]>) -> Self {
+        Self {
+            name: name.as_ref().into(),
+            clips: clips.as_ref().iter().map(|x|x.clone()).collect()
+        }
+    }
+}
diff --git a/src/device/sequencer/horizontal.rs b/src/device/sequencer/horizontal.rs
index 97731873..b0a18851 100644
--- a/src/device/sequencer/horizontal.rs
+++ b/src/device/sequencer/horizontal.rs
@@ -127,8 +127,8 @@ pub fn lanes (
                 phrase.contains_note_on(u7::from_int_lossy(note_b as u8), a, b),
             ) {
               (true, true)   => ("█", wh),
-              (false, true)  => ("▄", wh),
-              (true, false)  => ("▀", wh),
+              (false, true)  => ("▀", wh),
+              (true, false)  => ("▄", wh),
               (false, false) => ("·", bw),
             };
             let y = y + height.saturating_sub(index+2) as u16;
diff --git a/src/layout/collect.rs b/src/layout/collect.rs
new file mode 100644
index 00000000..3a302869
--- /dev/null
+++ b/src/layout/collect.rs
@@ -0,0 +1,42 @@
+
+pub enum Collected<'a> {
+    Box(Box<dyn Render + 'a>),
+    Ref(&'a (dyn Render + 'a)),
+    None
+}
+
+impl<'a> Render for Collected<'a> {
+    fn render (&self, buf: &mut Buffer, area: Rect) -> Usually<Rect> {
+        match self {
+            Self::Box(item) => (*item).render(buf, area),
+            Self::Ref(item) => (*item).render(buf, area),
+            Self::None => Ok(area),
+        }
+    }
+}
+
+pub struct Collector<'a>(pub Vec<Collected<'a>>);
+
+impl<'a, R: Render + 'a> FnOnce<(R)> for Collector<'a> {
+    type Output = ();
+    extern "rust-call" fn call_once (self, (device, ): (R,)) -> Self::Output {
+        self.add(widget.into_collected());
+    }
+}
+
+impl<'a> Collector<'a> {
+    pub fn collect (collect: impl Fn(&mut Collector<'a>)) -> Self {
+        let mut items = Self(vec![]);
+        collect(&mut items);
+        items
+    }
+    fn add (mut self, widget: Collected<'a>) -> Self {
+        self.0.push(widget);
+        self
+    }
+}
+
+pub trait Collection<'a, T, U> {
+    fn add (self, widget: impl Render + 'a) -> Self;
+}
+
diff --git a/src/layout/container.rs b/src/layout/container.rs
index 4a463d65..257839a4 100644
--- a/src/layout/container.rs
+++ b/src/layout/container.rs
@@ -1,5 +1,17 @@
 use crate::core::*;
 
+pub struct Stack<'a>(pub &'a[Box<dyn Render>]);
+
+impl<'a> Render for Stack<'a> {
+    fn render (&self, buf: &mut Buffer, area: Rect) -> Usually<Rect> {
+        let mut area2 = area.clone();
+        for layer in self.0.iter() {
+            area2 = layer.render(buf, area2)?;
+        }
+        Ok(area)
+    }
+}
+
 pub struct Column(pub Vec<Box<dyn Device>>);
 
 pub struct Row(pub Vec<Box<dyn Device>>);
diff --git a/src/main.rs b/src/main.rs
index adada051..2ba4316d 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,3 +1,5 @@
+//#![feature(fn_traits)]
+//#![feature(unboxed_closures)]
 #![allow(macro_expanded_macro_exports_accessed_by_absolute_paths)]
 
 extern crate clap;
@@ -18,23 +20,59 @@ use crate::device::*;
 
 mod new {
     use crate::core::*;
-    type Phrase = (String, usize, BTreeMap<usize, Vec<Vec<u8>>>);
-    type Scene  = (String, Option<usize>, Vec<Option<AtomicUsize>>);
+    use crate::layout::Stack;
+    type Phrase = (String, usize, BTreeMap<usize, Vec<MidiMessage>>);
+    type Scene  = (String, Option<usize>, Vec<Option<usize>>);
     type Track  = (String, usize);
     #[derive(Default)]
-    struct App {
-        phrases: BTreeMap<usize, Arc<Mutex<Phrase>>>,
-        scenes:  BTreeMap<usize, Arc<Mutex<Scene>>>,
-        tracks:  BTreeMap<usize, Arc<Mutex<Track>>>,
+    pub struct App {
+        client:   Option<DynamicAsyncClient>,
+        phrases:  BTreeMap<usize, Phrase>,
+        scenes:   BTreeMap<usize, Scene>,
+        tracks:   BTreeMap<usize, Track>,
+        frame:    usize,
+        scene:    Vec<usize>,
+        timebase: Arc<Timebase>,
     }
-    fn main () {
-        App::default().run()
-    }
-    impl App {
-        fn run (self) {
-            panic_hook_setup();
+    struct SceneGrid {}
+    impl Render for SceneGrid {}
+    struct Chains {}
+    impl Render for Chains {}
+    struct Sequencer {}
+    impl Render for Sequencer {}
+    impl Render for App {
+        fn render (&self, buf: &mut Buffer, area: Rect) -> Usually<Rect> {
+            crate::device::Transport {
+                timebase: &self.timebase,
+                playing:  TransportState::Stopped,
+                record:   false,
+                overdub:  false,
+                monitor:  false,
+                frame:    0,
+            }.render(buf, area)?;
+            SceneGrid {
+            }.render(buf, area)?;
+            Chains {}.render(buf, area)?;
+            Sequencer {}.render(buf, area)?;
+            Ok(area)
         }
     }
+    impl Handle for App {
+        fn handle (&mut self, _e: &AppEvent) -> Usually<bool> {
+            Ok(true)
+        }
+    }
+    impl Process for App {
+        fn process (&mut self, _c: &Client, _s: &ProcessScope) -> Control {
+            Control::Continue
+        }
+    }
+    pub fn main () -> Usually<()> {
+        App::default().run(Some(|app: Arc<Mutex<App>>|{
+            app.lock().unwrap().client = Some(jack_run("tek", &app)?);
+            Ok(())
+        }))
+    }
 }
 
 macro_rules! sample {
@@ -61,8 +99,6 @@ fn main () -> Usually<()> {
     let xdg = microxdg::XdgApp::new("tek")?;
     crate::config::create_dirs(&xdg)?;
     //run(Sampler::new("Sampler#000")?)
-    let input  = ".*nanoKEY.*";
-    let output = ["Komplete.*:playback_FL", "Komplete.*:playback_FR"];
     let (client, _) = Client::new("init", ClientOptions::NO_START_SERVER)?;
     let timebase = Arc::new(Timebase::new(client.sample_rate() as f64, 125.0, 96.0));
     let ppq = timebase.ppq() as usize;
@@ -213,6 +249,13 @@ fn main () -> Usually<()> {
         ])
 
     )?
-        .connect(input, &output)?
-        .run()
+        .run(Some(init))
+}
+
+fn init (state: Arc<Mutex<DynamicDevice<Launcher>>>) -> Usually<()> {
+    let input  = ".*nanoKEY.*";
+    let output = ["Komplete.*:playback_FL", "Komplete.*:playback_FR"];
+    let state  = state.lock().unwrap();
+    state.connect(input, &output)?;
+    Ok(())
 }