diff --git a/crates/tek_api/src/api_clock.rs b/crates/tek_api/src/api_clock.rs
index 9a8a7b5b..366d2c1f 100644
--- a/crates/tek_api/src/api_clock.rs
+++ b/crates/tek_api/src/api_clock.rs
@@ -1,5 +1,9 @@
 use crate::*;
 
+pub trait HasClock: Send + Sync {
+    fn clock (&self) -> &ClockModel;
+}
+
 #[derive(Clone, Debug, PartialEq)]
 pub enum ClockCommand {
     Play(Option<u32>),
@@ -12,113 +16,150 @@ pub enum ClockCommand {
     SetSync(f64),
 }
 
-impl<T: ClockApi> Command<T> for ClockCommand {
+impl<T: HasClock> Command<T> for ClockCommand {
     fn execute (self, state: &mut T) -> Perhaps<Self> {
         use ClockCommand::*;
         match self {
-            Play(start)        => state.play_from(start)?,
-            Pause(pause)       => state.pause_at(pause)?,
-            SeekUsec(usec)     => state.current().update_from_usec(usec),
-            SeekSample(sample) => state.current().update_from_sample(sample),
-            SeekPulse(pulse)   => state.current().update_from_pulse(pulse),
-            SetBpm(bpm)        => return Ok(Some(SetBpm(state.timebase().bpm.set(bpm)))),
-            SetQuant(quant)    => return Ok(Some(SetQuant(state.quant().set(quant)))),
-            SetSync(sync)      => return Ok(Some(SetSync(state.sync().set(sync)))),
+            Play(start)        => state.clock().play_from(start)?,
+            Pause(pause)       => state.clock().pause_at(pause)?,
+            SeekUsec(usec)     => state.clock().current.update_from_usec(usec),
+            SeekSample(sample) => state.clock().current.update_from_sample(sample),
+            SeekPulse(pulse)   => state.clock().current.update_from_pulse(pulse),
+            SetBpm(bpm)        => return Ok(Some(SetBpm(state.clock().timebase().bpm.set(bpm)))),
+            SetQuant(quant)    => return Ok(Some(SetQuant(state.clock().quant.set(quant)))),
+            SetSync(sync)      => return Ok(Some(SetSync(state.clock().sync.set(sync)))),
         };
         Ok(None)
     }
 }
 
-pub trait ClockApi: Send + Sync {
-    /// Note quantization factor
-    fn quant (&self) -> &Arc<Quantize>;
-    /// Launch quantization factor
-    fn sync (&self) -> &Arc<LaunchSync>;
-    /// Current moment in time
-    fn current (&self) -> &Arc<Instant>;
-    /// Current temporal resolutions
-    fn timebase (&self) -> &Arc<Timebase> { &self.current().timebase }
-    /// Current sample rate
-    fn sr (&self) -> &SampleRate { &self.timebase().sr }
-    /// Current tempo
-    fn bpm (&self) -> &BeatsPerMinute { &self.timebase().bpm }
-    /// Current MIDI resolution
-    fn ppq (&self) -> &PulsesPerQuaver { &self.timebase().ppq }
-    /// Handle to JACK transport
-    fn transport_handle (&self) -> &Arc<Transport>;
+#[derive(Clone)]
+pub struct ClockModel {
+    /// JACK transport handle.
+    pub transport: Arc<Transport>,
     /// Playback state
-    fn transport_state (&self) -> &Arc<RwLock<Option<TransportState>>>;
+    pub playing:   Arc<RwLock<Option<TransportState>>>,
     /// Global sample and usec at which playback started
-    fn transport_offset (&self) -> &Arc<RwLock<Option<(usize, usize)>>>;
+    pub started:   Arc<RwLock<Option<(usize, usize)>>>,
+    /// Current moment in time
+    pub current:   Arc<Instant>,
+    /// Note quantization factor
+    pub quant:     Arc<Quantize>,
+    /// Launch quantization factor
+    pub sync:      Arc<LaunchSync>,
+}
 
-    fn next_launch_pulse (&self) -> usize {
-        let sync  = self.sync().get() as usize;
-        let pulse = self.current().pulse.get() as usize;
+impl From<&Arc<Transport>> for ClockModel {
+    fn from (transport: &Arc<Transport>) -> Self {
+        Self {
+            playing:   RwLock::new(None).into(),
+            started:   RwLock::new(None).into(),
+            current:   Instant::default().into(),
+            quant:     Arc::new(24.into()),
+            sync:      Arc::new(384.into()),
+            transport: transport.clone(),
+        }
+    }
+}
+
+impl std::fmt::Debug for ClockModel {
+    fn fmt (&self, f: &mut std::fmt::Formatter<'_>) -> std::result::Result<(), std::fmt::Error> {
+        f.debug_struct("editor")
+            .field("playing", &self.playing)
+            .field("started", &self.started)
+            .field("current", &self.current)
+            .field("quant",   &self.quant)
+            .field("sync",    &self.sync)
+            .finish()
+    }
+}
+
+impl ClockModel {
+    pub fn timebase (&self) -> &Arc<Timebase> {
+        &self.current.timebase
+    }
+    /// Current sample rate
+    pub fn sr (&self) -> &SampleRate {
+        &self.timebase().sr
+    }
+    /// Current tempo
+    pub fn bpm (&self) -> &BeatsPerMinute {
+        &self.timebase().bpm
+    }
+    /// Current MIDI resolution
+    pub fn ppq (&self) -> &PulsesPerQuaver {
+        &self.timebase().ppq
+    }
+    /// Next pulse that matches launch sync (for phrase switchover)
+    pub fn next_launch_pulse (&self) -> usize {
+        let sync  = self.sync.get() as usize;
+        let pulse = self.current.pulse.get() as usize;
         if pulse % sync == 0 {
             pulse
         } else {
             (pulse / sync + 1) * sync
         }
     }
-
-    fn play_from (&mut self, start: Option<u32>) -> Usually<()> {
+    /// Start playing, optionally seeking to a given location beforehand
+    pub fn play_from (&self, start: Option<u32>) -> Usually<()> {
         if let Some(start) = start {
-            self.transport_handle().locate(start)?;
+            self.transport.locate(start)?;
         }
-        self.transport_handle().start()?;
+        self.transport.start()?;
         self.update_transport_state()
     }
-    fn is_rolling (&self) -> bool {
-        *self.transport_state().read().unwrap() == Some(TransportState::Rolling)
-    }
-
-    fn pause_at (&mut self, pause: Option<u32>) -> Usually<()> {
-        self.transport_handle().stop()?;
+    /// Pause, optionally seeking to a given location afterwards
+    pub fn pause_at (&self, pause: Option<u32>) -> Usually<()> {
+        self.transport.stop()?;
         if let Some(pause) = pause {
-            self.transport_handle().locate(pause)?;
+            self.transport.locate(pause)?;
         }
         self.update_transport_state()
     }
-    fn is_stopped (&self) -> bool {
-        *self.transport_state().read().unwrap() == Some(TransportState::Stopped)
-    }
-
-    fn update_transport_state (&self) -> Usually<()> {
-        *self.transport_state().write().unwrap() = Some(self.transport_handle().query_state()?);
+    /// Update the state according to JACK transport
+    pub fn update_transport_state (&self) -> Usually<()> {
+        *self.playing.write().unwrap() = Some(self.transport.query_state()?);
         Ok(())
     }
-
-    fn toggle_play (&self) -> Usually<()> {
-        let playing = self.transport_state().read().unwrap().expect("1st sample has not been processed yet");
-        let playing = match playing {
-            TransportState::Stopped => {
-                self.transport_handle().start()?;
-                Some(TransportState::Starting)
-            },
-            _ => {
-                self.transport_handle().stop()?;
-                self.transport_handle().locate(0)?;
-                Some(TransportState::Stopped)
-            },
-        };
-        *self.transport_state().write().unwrap() = playing;
-        Ok(())
+    /// Is currently paused?
+    pub fn is_stopped (&self) -> bool {
+        *self.playing.read().unwrap() == Some(TransportState::Stopped)
     }
+    /// Is currently playing?
+    pub fn is_rolling (&self) -> bool {
+        *self.playing.read().unwrap() == Some(TransportState::Rolling)
+    }
+    //fn toggle_play (&self) -> Usually<()> {
+        //let playing = self.playing.read().unwrap().expect("1st sample has not been processed yet");
+        //let playing = match playing {
+            //TransportState::Stopped => {
+                //self.transport.start()?;
+                //Some(TransportState::Starting)
+            //},
+            //_ => {
+                //self.transport.stop()?;
+                //self.transport.locate(0)?;
+                //Some(TransportState::Stopped)
+            //},
+        //};
+        //*self.playing.write().unwrap() = playing;
+        //Ok(())
+    //}
 }
 
 /// Hosts the JACK callback for updating the temporal pointer and playback status.
-pub struct ClockAudio<'a, T: ClockApi>(pub &'a mut T);
+pub struct ClockAudio<'a, T: HasClock>(pub &'a mut T);
 
-impl<'a, T: ClockApi> Audio for ClockAudio<'a, T> {
+impl<'a, T: HasClock> Audio for ClockAudio<'a, T> {
     #[inline] fn process (&mut self, _: &Client, scope: &ProcessScope) -> Control {
-        let state = &mut self.0;
+        let state = self.0.clock();
         let times = scope.cycle_times().unwrap();
         let CycleTimes { current_frames, current_usecs, next_usecs: _, period_usecs: _ } = times;
         let _chunk_size = scope.n_frames() as usize;
-        let transport = state.transport_handle().query().unwrap();
-        state.current().sample.set(transport.pos.frame() as f64);
-        let mut playing = state.transport_state().write().unwrap();
-        let mut started = state.transport_offset().write().unwrap();
+        let transport = state.transport.query().unwrap();
+        state.current.sample.set(transport.pos.frame() as f64);
+        let mut playing = state.playing.write().unwrap();
+        let mut started = state.started.write().unwrap();
         if *playing != Some(transport.state) {
             match transport.state {
                 TransportState::Rolling => {
@@ -134,7 +175,7 @@ impl<'a, T: ClockApi> Audio for ClockAudio<'a, T> {
         if *playing == Some(TransportState::Stopped) {
             *started = None;
         }
-        state.current().update_from_usec(match *started {
+        state.current.update_from_usec(match *started {
             Some((_, usecs)) => current_usecs as f64 - usecs as f64,
             None => 0.
         });
diff --git a/crates/tek_api/src/api_player.rs b/crates/tek_api/src/api_player.rs
index 81a0f93a..7c9029a1 100644
--- a/crates/tek_api/src/api_player.rs
+++ b/crates/tek_api/src/api_player.rs
@@ -7,7 +7,7 @@ pub trait HasPlayer: JackApi {
 
 pub trait MidiPlayerApi: MidiInputApi + MidiOutputApi + Send + Sync {}
 
-pub trait HasPhrase: ClockApi {
+pub trait HasPhrase: HasClock {
     fn reset (&self) -> bool;
     fn reset_mut (&mut self) -> &mut bool;
 
@@ -21,23 +21,22 @@ pub trait HasPhrase: ClockApi {
     fn next_phrase_mut (&mut self)
         -> &mut Option<(Instant, Option<Arc<RwLock<Phrase>>>)>;
     fn enqueue_next (&mut self, phrase: Option<&Arc<RwLock<Phrase>>>) {
-        let start = self.next_launch_pulse();
-        *self.next_phrase_mut() = Some((
-            Instant::from_pulse(self.timebase(), start as f64),
-            phrase.map(|p|p.clone())
-        ));
+        let start   = self.clock().next_launch_pulse() as f64;
+        let instant = Instant::from_pulse(&self.clock().timebase(), start);
+        let phrase  = phrase.map(|p|p.clone());
+        *self.next_phrase_mut() = Some((instant, phrase));
         *self.reset_mut() = true;
     }
     fn pulses_since_start (&self) -> Option<f64> {
         if let Some((started, Some(_))) = self.play_phrase().as_ref() {
-            Some(self.current().pulse.get() - started.pulse.get())
+            Some(self.clock().current.pulse.get() - started.pulse.get())
         } else {
             None
         }
     }
 }
 
-pub trait MidiInputApi: ClockApi + HasPhrase {
+pub trait MidiInputApi: HasPhrase {
     fn midi_ins (&self) -> &Vec<Port<MidiIn>>;
     fn midi_ins_mut (&mut self) -> &mut Vec<Port<MidiIn>>;
     fn has_midi_ins (&self) -> bool {
@@ -71,38 +70,40 @@ pub trait MidiInputApi: ClockApi + HasPhrase {
         let sample0 = scope.last_frame_time() as usize;
         // For highlighting keys and note repeat
         let notes_in = self.notes_in().clone();
-        if let (true, Some((started, ref phrase))) = (self.is_rolling(), self.play_phrase().clone()) {
-            let start      = started.sample.get() as usize;
-            let quant      = self.quant().get();
-            let timebase   = self.timebase().clone();
-            let monitoring = self.monitoring();
-            let recording  = self.recording();
-            for input in self.midi_ins_mut().iter() {
-                for (sample, event, bytes) in parse_midi_input(input.iter(scope)) {
-                    if let LiveEvent::Midi { message, .. } = event {
-                        if monitoring {
-                            midi_buf[sample].push(bytes.to_vec())
-                        }
-                        if recording {
-                            if let Some(phrase) = phrase {
-                                let mut phrase = phrase.write().unwrap();
-                                let length = phrase.length;
-                                phrase.record_event({
-                                    let sample    = (sample0 + sample - start) as f64;
-                                    let pulse     = timebase.samples_to_pulse(sample);
-                                    let quantized = (pulse / quant).round() * quant;
-                                    let looped    = quantized as usize % length;
-                                    looped
-                                }, message);
+        if self.clock().is_rolling() {
+            if let Some((started, ref phrase)) = self.play_phrase().clone() {
+                let start      = started.sample.get() as usize;
+                let quant      = self.clock().quant.get();
+                let timebase   = self.clock().timebase().clone();
+                let monitoring = self.monitoring();
+                let recording  = self.recording();
+                for input in self.midi_ins_mut().iter() {
+                    for (sample, event, bytes) in parse_midi_input(input.iter(scope)) {
+                        if let LiveEvent::Midi { message, .. } = event {
+                            if monitoring {
+                                midi_buf[sample].push(bytes.to_vec())
                             }
+                            if recording {
+                                if let Some(phrase) = phrase {
+                                    let mut phrase = phrase.write().unwrap();
+                                    let length = phrase.length;
+                                    phrase.record_event({
+                                        let sample    = (sample0 + sample - start) as f64;
+                                        let pulse     = timebase.samples_to_pulse(sample);
+                                        let quantized = (pulse / quant).round() * quant;
+                                        let looped    = quantized as usize % length;
+                                        looped
+                                    }, message);
+                                }
+                            }
+                            update_keys(&mut*notes_in.write().unwrap(), &message);
                         }
-                        update_keys(&mut*notes_in.write().unwrap(), &message);
                     }
                 }
             }
-        }
-        if let (true, Some((start_at, phrase))) = (self.is_rolling(), &self.next_phrase()) {
-            // TODO switch to next phrase and record into it
+            if let Some((start_at, phrase)) = &self.next_phrase() {
+                // TODO switch to next phrase and record into it
+            }
         }
     }
 
@@ -125,7 +126,7 @@ pub trait MidiInputApi: ClockApi + HasPhrase {
 
 }
 
-pub trait MidiOutputApi: ClockApi + HasPhrase {
+pub trait MidiOutputApi: HasPhrase {
     fn midi_outs (&self) -> &Vec<Port<MidiOut>>;
 
     fn midi_outs_mut (&mut self) -> &mut Vec<Port<MidiOut>>;
@@ -162,14 +163,14 @@ pub trait MidiOutputApi: ClockApi + HasPhrase {
     ) -> bool {
         let mut next = false;
         // Write MIDI events from currently playing phrase (if any) to MIDI output buffer
-        if self.is_rolling() {
+        if self.clock().is_rolling() {
             let sample0 = scope.last_frame_time() as usize;
             let samples = scope.n_frames() as usize;
             // If no phrase is playing, prepare for switchover immediately
             next = self.play_phrase().is_none();
             let phrase      = self.play_phrase();
-            let started0    = self.transport_offset();
-            let timebase    = self.timebase();
+            let started0    = &self.clock().started;
+            let timebase    = self.clock().timebase();
             let notes_out   = self.notes_out();
             let next_phrase = self.next_phrase();
             if let Some((started, phrase)) = phrase {
@@ -232,18 +233,18 @@ pub trait MidiOutputApi: ClockApi + HasPhrase {
         note_buffer: &mut Vec<u8>,
         output_buffer: &mut Vec<Vec<Vec<u8>>>
     ) {
-        if self.is_rolling() {
+        if self.clock().is_rolling() {
             let sample0 = scope.last_frame_time() as usize;
             //let samples = scope.n_frames() as usize;
             if let Some((start_at, phrase)) = &self.next_phrase() {
                 let start  = start_at.sample.get() as usize;
-                let sample = self.transport_offset().read().unwrap().unwrap().0;
+                let sample = self.clock().started.read().unwrap().unwrap().0;
                 // If it's time to switch to the next phrase:
                 if start <= sample0.saturating_sub(sample) {
                     // Samples elapsed since phrase was supposed to start
                     let skipped = sample0 - start;
                     // Switch over to enqueued phrase
-                    let started = Instant::from_sample(&self.timebase(), start as f64);
+                    let started = Instant::from_sample(&self.clock().timebase(), start as f64);
                     *self.play_phrase_mut() = Some((started, phrase.clone()));
                     // Unset enqueuement (TODO: where to implement looping?)
                     *self.next_phrase_mut() = None
diff --git a/crates/tek_tui/src/lib.rs b/crates/tek_tui/src/lib.rs
index 92af2e72..76001ba7 100644
--- a/crates/tek_tui/src/lib.rs
+++ b/crates/tek_tui/src/lib.rs
@@ -91,30 +91,6 @@ impl TuiTheme {
     }
 }
 
-macro_rules! impl_clock_api {
-    ($Struct:ident $(:: $field:ident)*) => {
-        impl ClockApi for $Struct {
-            fn quant (&self) -> &Arc<Quantize> {
-                &self$(.$field)*.quant
-            }
-            fn sync (&self) -> &Arc<LaunchSync> {
-                &self$(.$field)*.sync
-            }
-            fn current (&self) -> &Arc<Instant> {
-                &self$(.$field)*.current
-            }
-            fn transport_handle (&self) -> &Arc<Transport> {
-                &self$(.$field)*.transport
-            }
-            fn transport_state  (&self) -> &Arc<RwLock<Option<TransportState>>> {
-                &self$(.$field)*.playing
-            }
-            fn transport_offset (&self) -> &Arc<RwLock<Option<(usize, usize)>>> {
-                &self$(.$field)*.started
-            }
-        }
-    }
-}
 macro_rules! impl_midi_player {
     ($Struct:ident $(:: $field:ident)*) => {
         impl HasPhrase for $Struct {
@@ -184,12 +160,6 @@ macro_rules! impl_midi_player {
     }
 }
 
-impl_clock_api!(TransportTui::clock);
-impl_clock_api!(SequencerTui::clock);
-impl_clock_api!(ArrangerTui::clock);
-impl_clock_api!(PhrasePlayerModel::clock);
-impl_clock_api!(ArrangerTrack::player::clock);
-
 impl_midi_player!(SequencerTui::player);
 impl_midi_player!(ArrangerTrack::player);
 impl_midi_player!(PhrasePlayerModel);
@@ -197,18 +167,6 @@ impl_midi_player!(PhrasePlayerModel);
 use std::fmt::{Debug, Formatter, Error};
 type DebugResult = std::result::Result<(), Error>;
 
-impl Debug for ClockModel {
-    fn fmt (&self, f: &mut Formatter<'_>) -> DebugResult {
-        f.debug_struct("editor")
-            .field("playing", &self.playing)
-            .field("started", &self.started)
-            .field("current", &self.current)
-            .field("quant",   &self.quant)
-            .field("sync",    &self.sync)
-            .finish()
-    }
-}
-
 impl Debug for TransportTui {
     fn fmt (&self, f: &mut Formatter<'_>) -> DebugResult {
         f.debug_struct("Measure")
diff --git a/crates/tek_tui/src/tui_app_arranger.rs b/crates/tek_tui/src/tui_app_arranger.rs
index 04312f37..2e634a59 100644
--- a/crates/tek_tui/src/tui_app_arranger.rs
+++ b/crates/tek_tui/src/tui_app_arranger.rs
@@ -54,6 +54,16 @@ impl TryFrom<&Arc<RwLock<JackClient>>> for ArrangerTui {
     }
 }
 
+impl HasClock for ArrangerTui {
+    fn clock (&self) -> &ClockModel {
+        &self.clock
+    }
+}
+impl HasClock for ArrangerTrack {
+    fn clock (&self) -> &ClockModel {
+        &self.player.clock()
+    }
+}
 impl HasPhrases for ArrangerTui {
     fn phrases (&self) -> &Vec<Arc<RwLock<Phrase>>> {
         &self.phrases.phrases
diff --git a/crates/tek_tui/src/tui_app_sequencer.rs b/crates/tek_tui/src/tui_app_sequencer.rs
index 968ca516..a7680395 100644
--- a/crates/tek_tui/src/tui_app_sequencer.rs
+++ b/crates/tek_tui/src/tui_app_sequencer.rs
@@ -39,6 +39,12 @@ impl TryFrom<&Arc<RwLock<JackClient>>> for SequencerTui {
     }
 }
 
+impl HasClock for SequencerTui {
+    fn clock (&self) -> &ClockModel {
+        &self.clock
+    }
+}
+
 impl HasPhrases for SequencerTui {
     fn phrases (&self) -> &Vec<Arc<RwLock<Phrase>>> {
         &self.phrases.phrases
diff --git a/crates/tek_tui/src/tui_app_transport.rs b/crates/tek_tui/src/tui_app_transport.rs
index 5c784da7..4cc717b5 100644
--- a/crates/tek_tui/src/tui_app_transport.rs
+++ b/crates/tek_tui/src/tui_app_transport.rs
@@ -23,6 +23,12 @@ impl TryFrom<&Arc<RwLock<JackClient>>> for TransportTui {
     }
 }
 
+impl HasClock for TransportTui {
+    fn clock (&self) -> &ClockModel {
+        &self.clock
+    }
+}
+
 /// Which item of the transport toolbar is focused
 #[derive(Clone, Copy, Debug, Eq, PartialEq)]
 pub enum TransportFocus {
diff --git a/crates/tek_tui/src/tui_control_arranger.rs b/crates/tek_tui/src/tui_control_arranger.rs
index 98fe36f5..86af7149 100644
--- a/crates/tek_tui/src/tui_control_arranger.rs
+++ b/crates/tek_tui/src/tui_control_arranger.rs
@@ -89,8 +89,8 @@ impl ArrangerControl for ArrangerTui {
                     track.enqueue_next(phrase.as_ref());
                 }
             }
-            if self.is_stopped() {
-                self.play_from(Some(0))?;
+            if self.clock().is_stopped() {
+                self.clock().play_from(Some(0))?;
             }
         } else if let ArrangerSelection::Clip(t, s) = self.selected {
             let phrase = self.scenes()[s].clips[t].clone();
diff --git a/crates/tek_tui/src/tui_control_sequencer.rs b/crates/tek_tui/src/tui_control_sequencer.rs
index 8e9030ee..1e2b4b8b 100644
--- a/crates/tek_tui/src/tui_control_sequencer.rs
+++ b/crates/tek_tui/src/tui_control_sequencer.rs
@@ -52,11 +52,11 @@ pub fn to_sequencer_command (state: &SequencerTui, input: &TuiInput) -> Option<S
     Some(match input.event() {
         // Play/pause
         key!(Char(' ')) => Clock(
-            if state.is_stopped() { Play(None) } else { Pause(None) }
+            if state.clock().is_stopped() { Play(None) } else { Pause(None) }
         ),
         // Play from start/rewind to start
         key!(Shift-Char(' ')) => Clock(
-            if state.is_stopped() { Play(Some(0)) } else { Pause(Some(0)) }
+            if state.clock().is_stopped() { Play(Some(0)) } else { Pause(Some(0)) }
         ),
         // Edit phrase
         key!(Char('e')) => match state.focused() {
diff --git a/crates/tek_tui/src/tui_control_transport.rs b/crates/tek_tui/src/tui_control_transport.rs
index f59f750a..6ef05509 100644
--- a/crates/tek_tui/src/tui_control_transport.rs
+++ b/crates/tek_tui/src/tui_control_transport.rs
@@ -28,7 +28,7 @@ impl<T: TransportControl> Command<T> for TransportCommand {
     }
 }
 
-pub trait TransportControl: ClockApi + FocusGrid + HasEnter {
+pub trait TransportControl: HasClock + FocusGrid + HasEnter {
     fn transport_focused (&self) -> Option<TransportFocus>;
 }
 
@@ -73,36 +73,36 @@ where
     Some(match input.event() {
         key!(Left)  => Focus(FocusCommand::Prev),
         key!(Right) => Focus(FocusCommand::Next),
-        key!(Char(' ')) => Clock(if state.is_stopped() {
+        key!(Char(' ')) => Clock(if state.clock().is_stopped() {
             ClockCommand::Play(None)
         } else {
             ClockCommand::Pause(None)
         }),
-        key!(Shift-Char(' ')) => Clock(if state.is_stopped() {
+        key!(Shift-Char(' ')) => Clock(if state.clock().is_stopped() {
             ClockCommand::Play(Some(0))
         } else {
             ClockCommand::Pause(Some(0))
         }),
         _ => match state.transport_focused().unwrap() {
             TransportFocus::Bpm => match input.event() {
-                key!(Char(',')) => Clock(SetBpm(state.bpm().get() - 1.0)),
-                key!(Char('.')) => Clock(SetBpm(state.bpm().get() + 1.0)),
-                key!(Char('<')) => Clock(SetBpm(state.bpm().get() - 0.001)),
-                key!(Char('>')) => Clock(SetBpm(state.bpm().get() + 0.001)),
+                key!(Char(',')) => Clock(SetBpm(state.clock().bpm().get() - 1.0)),
+                key!(Char('.')) => Clock(SetBpm(state.clock().bpm().get() + 1.0)),
+                key!(Char('<')) => Clock(SetBpm(state.clock().bpm().get() - 0.001)),
+                key!(Char('>')) => Clock(SetBpm(state.clock().bpm().get() + 0.001)),
                 _ => return None,
             },
             TransportFocus::Quant => match input.event() {
-                key!(Char(',')) => Clock(SetQuant(state.quant().prev())),
-                key!(Char('.')) => Clock(SetQuant(state.quant().next())),
-                key!(Char('<')) => Clock(SetQuant(state.quant().prev())),
-                key!(Char('>')) => Clock(SetQuant(state.quant().next())),
+                key!(Char(',')) => Clock(SetQuant(state.clock().quant.prev())),
+                key!(Char('.')) => Clock(SetQuant(state.clock().quant.next())),
+                key!(Char('<')) => Clock(SetQuant(state.clock().quant.prev())),
+                key!(Char('>')) => Clock(SetQuant(state.clock().quant.next())),
                 _ => return None,
             },
             TransportFocus::Sync => match input.event() {
-                key!(Char(',')) => Clock(SetSync(state.sync().prev())),
-                key!(Char('.')) => Clock(SetSync(state.sync().next())),
-                key!(Char('<')) => Clock(SetSync(state.sync().prev())),
-                key!(Char('>')) => Clock(SetSync(state.sync().next())),
+                key!(Char(',')) => Clock(SetSync(state.clock().sync.prev())),
+                key!(Char('.')) => Clock(SetSync(state.clock().sync.next())),
+                key!(Char('<')) => Clock(SetSync(state.clock().sync.prev())),
+                key!(Char('>')) => Clock(SetSync(state.clock().sync.next())),
                 _ => return None,
             },
             TransportFocus::Clock => match input.event() {
@@ -114,14 +114,14 @@ where
             },
             TransportFocus::PlayPause => match input.event() {
                 key!(Enter) => Clock(
-                    if state.is_stopped() {
+                    if state.clock().is_stopped() {
                         ClockCommand::Play(None)
                     } else {
                         ClockCommand::Pause(None)
                     }
                 ),
                 key!(Shift-Enter) => Clock(
-                    if state.is_stopped() {
+                    if state.clock().is_stopped() {
                         ClockCommand::Play(Some(0))
                     } else {
                         ClockCommand::Pause(Some(0))
diff --git a/crates/tek_tui/src/tui_model_clock.rs b/crates/tek_tui/src/tui_model_clock.rs
index 0a66bb1e..c7b7e813 100644
--- a/crates/tek_tui/src/tui_model_clock.rs
+++ b/crates/tek_tui/src/tui_model_clock.rs
@@ -1,33 +1 @@
 use crate::*;
-
-#[derive(Clone)]
-pub struct ClockModel {
-    /// JACK transport handle.
-    pub(crate) transport: Arc<Transport>,
-    /// Playback state
-    pub(crate) playing:   Arc<RwLock<Option<TransportState>>>,
-    /// Global sample and usec at which playback started
-    pub(crate) started:   Arc<RwLock<Option<(usize, usize)>>>,
-    /// Current moment in time
-    pub(crate) current:   Arc<Instant>,
-    /// Note quantization factor
-    pub(crate) quant:     Arc<Quantize>,
-    /// Launch quantization factor
-    pub(crate) sync:      Arc<LaunchSync>,
-    /// TODO: Enable metronome?
-    pub(crate) metronome: bool,
-}
-
-impl From<&Arc<Transport>> for ClockModel {
-    fn from (transport: &Arc<Transport>) -> Self {
-        Self {
-            playing:   RwLock::new(None).into(),
-            started:   RwLock::new(None).into(),
-            current:   Instant::default().into(),
-            quant:     Arc::new(24.into()),
-            sync:      Arc::new(384.into()),
-            transport: transport.clone(),
-            metronome: false,
-        }
-    }
-}
diff --git a/crates/tek_tui/src/tui_model_phrase_player.rs b/crates/tek_tui/src/tui_model_phrase_player.rs
index 2e18fb33..33a782de 100644
--- a/crates/tek_tui/src/tui_model_phrase_player.rs
+++ b/crates/tek_tui/src/tui_model_phrase_player.rs
@@ -46,3 +46,9 @@ impl From<&ClockModel> for PhrasePlayerModel {
         }
     }
 }
+
+impl HasClock for PhrasePlayerModel {
+    fn clock (&self) -> &ClockModel {
+        &self.clock
+    }
+}
diff --git a/crates/tek_tui/src/tui_view_arranger.rs b/crates/tek_tui/src/tui_view_arranger.rs
index 5795bdf6..a60d26af 100644
--- a/crates/tek_tui/src/tui_view_arranger.rs
+++ b/crates/tek_tui/src/tui_view_arranger.rs
@@ -91,8 +91,8 @@ pub fn arranger_content_vertical (
     view: &ArrangerTui,
     factor: usize
 ) -> impl Widget<Engine = Tui> + use<'_> {
-    let timebase  = view.timebase();
-    let current   = view.current();
+    let timebase  = view.clock().timebase();
+    let current   = &view.clock().current;
     let tracks    = view.tracks();
     let scenes    = view.scenes();
     let cols      = track_widths(tracks);
diff --git a/crates/tek_tui/src/tui_view_transport.rs b/crates/tek_tui/src/tui_view_transport.rs
index b52bbb1a..ab49ef8b 100644
--- a/crates/tek_tui/src/tui_view_transport.rs
+++ b/crates/tek_tui/src/tui_view_transport.rs
@@ -54,22 +54,18 @@ impl Content for TransportView {
     }
 }
 
-impl<'a, T> From<&'a T> for TransportView
-where
-    T: ClockApi,
-    Option<TransportFocus>: From<&'a T>
-{
+impl<'a, T: HasClock> From<&'a T> for TransportView where Option<TransportFocus>: From<&'a T> {
     fn from (state: &'a T) -> Self {
         let selected = state.into();
         Self {
             selected,
             focused: selected.is_some(),
-            state:   state.transport_state().read().unwrap().clone(),
-            bpm:     state.bpm().get(),
-            sync:    state.sync().get(),
-            quant:   state.quant().get(),
-            beat:    state.current().format_beat(),
-            msu:     state.current().usec.format_msu(),
+            state:   state.clock().playing.read().unwrap().clone(),
+            bpm:     state.clock().bpm().get(),
+            sync:    state.clock().sync.get(),
+            quant:   state.clock().quant.get(),
+            beat:    state.clock().current.format_beat(),
+            msu:     state.clock().current.usec.format_msu(),
         }
     }
 }