diff --git a/crates/tek_api/src/api_edn.rs b/crates/tek_api/src/api_edn.rs
index 7d1e57ec..00a2f451 100644
--- a/crates/tek_api/src/api_edn.rs
+++ b/crates/tek_api/src/api_edn.rs
@@ -22,8 +22,11 @@ impl Scene {
             },
             _ => panic!("unexpected in scene '{name:?}': {edn:?}")
         });
-        let scene = Self::new(name.unwrap_or(""), clips);
-        Ok(scene)
+        Ok(Scene {
+            name:  Arc::new(name.unwrap_or("").to_string().into()),
+            color: ItemColor::random(),
+            clips,
+        })
     }
 }
 
@@ -35,9 +38,13 @@ impl MixerTrack {
     const SYM_LV2:     &'static str = "lv2";
     pub fn from_edn <'a, 'e> (jack: &Arc<RwLock<JackClient>>, args: &[Edn<'e>]) -> Usually<Self> {
         let mut _gain = 0.0f64;
-        let mut track = Self::new("")?;
+        let mut track = MixerTrack {
+            name:    String::new(),
+            ports:   JackPorts::default(),
+            devices: vec![],
+        };
         #[allow(unused_mut)]
-        let mut devices: Vec<JackDevice> = vec![];
+        let mut devices: Vec<JackClient> = vec![];
         edn!(edn in args {
             Edn::Map(map) => {
                 if let Some(Edn::Str(n)) = map.get(&Edn::Key(Self::SYM_NAME)) {
@@ -81,7 +88,7 @@ impl MixerTrack {
 }
 
 impl LV2Plugin {
-    pub fn from_edn <'e> (jack: &Arc<RwLock<JackClient>>, args: &[Edn<'e>]) -> Usually<JackDevice> {
+    pub fn from_edn <'e> (jack: &Arc<RwLock<JackClient>>, args: &[Edn<'e>]) -> Usually<JackClient> {
         let mut name = String::new();
         let mut path = String::new();
         edn!(edn in args {
@@ -100,7 +107,7 @@ impl LV2Plugin {
 }
 
 impl Sampler {
-    pub fn from_edn <'e> (jack: &Arc<RwLock<JackClient>>, args: &[Edn<'e>]) -> Usually<JackDevice> {
+    pub fn from_edn <'e> (jack: &Arc<RwLock<JackClient>>, args: &[Edn<'e>]) -> Usually<Sampler> {
         let mut name = String::new();
         let mut dir  = String::new();
         let mut samples = BTreeMap::new();
@@ -126,7 +133,16 @@ impl Sampler {
             },
             _ => panic!("unexpected in sampler {name}: {edn:?}")
         });
-        Self::new(jack, &name, Some(samples))
+        Ok(Sampler {
+            jack:     jack.clone(),
+            name:     name.into(),
+            mapped:   samples,
+            unmapped: Default::default(),
+            voices:   Default::default(),
+            ports:    Default::default(),
+            buffer:   Default::default(),
+            output_gain: 0.
+        })
     }
 }
 
diff --git a/crates/tek_api/src/lib.rs b/crates/tek_api/src/lib.rs
index ef4988ce..1b346ebf 100644
--- a/crates/tek_api/src/lib.rs
+++ b/crates/tek_api/src/lib.rs
@@ -148,7 +148,7 @@ pub struct Phrase {
 /// MIDI message structural
 pub type PhraseData = Vec<Vec<MidiMessage>>;
 
-#[derive(Default, Debug, Clone)]
+#[derive(Debug)]
 pub struct Mixer {
     /// JACK client handle (needs to not be dropped for standalone mode to work).
     pub jack:            Arc<RwLock<JackClient>>,
@@ -159,30 +159,25 @@ pub struct Mixer {
 }
 
 /// A mixer track.
-#[derive(Default, Debug, Clone)]
+#[derive(Debug)]
 pub struct MixerTrack {
     pub name:    String,
     /// Inputs and outputs of 1st and last device
     pub ports:   JackPorts,
     /// Device chain
-    pub devices: Vec<JackDevice>,
-    /// Device selector
-    pub device:  usize,
+    pub devices: Vec<JackClient>,
 }
 
 /// The sampler plugin plays sounds.
-#[derive(Default, Debug, Clone)]
+#[derive(Debug)]
 pub struct Sampler {
     pub jack:        Arc<RwLock<JackClient>>,
     pub name:        String,
-    pub cursor:      (usize, usize),
-    pub editing:     Option<Arc<RwLock<Sample>>>,
     pub mapped:      BTreeMap<u7, Arc<RwLock<Sample>>>,
     pub unmapped:    Vec<Arc<RwLock<Sample>>>,
     pub voices:      Arc<RwLock<Vec<Voice>>>,
     pub ports:       JackPorts,
     pub buffer:      Vec<Vec<f32>>,
-    pub modal:       Arc<Mutex<Option<Box<dyn Exit + Send>>>>,
     pub output_gain: f32
 }
 
diff --git a/crates/tek_core/src/audio.rs b/crates/tek_core/src/audio.rs
index 6b2c245b..1d36fe07 100644
--- a/crates/tek_core/src/audio.rs
+++ b/crates/tek_core/src/audio.rs
@@ -36,6 +36,7 @@ pub trait AudioEngine {
     }
 }
 /// Wraps [Client] or [DynamicAsyncClient] in place.
+#[derive(Debug)]
 pub enum JackClient {
     /// Before activation.
     Inactive(Client),