diff --git a/Cargo.lock b/Cargo.lock
index d347c250..d5775d8b 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1996,6 +1996,21 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "quanta"
+version = "0.12.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8e5167a477619228a0b284fac2674e3c388cba90631d7b7de620e6f1fcd08da5"
+dependencies = [
+ "crossbeam-utils",
+ "libc",
+ "once_cell",
+ "raw-cpuid",
+ "wasi",
+ "web-sys",
+ "winapi",
+]
+
 [[package]]
 name = "quick-xml"
 version = "0.36.1"
@@ -2064,6 +2079,15 @@ dependencies = [
  "unicode-width",
 ]
 
+[[package]]
+name = "raw-cpuid"
+version = "11.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1ab240315c661615f2ee9f0f2cd32d5a7343a84d5ebcccb99d46e6637565e7b0"
+dependencies = [
+ "bitflags 2.6.0",
+]
+
 [[package]]
 name = "raw-window-handle"
 version = "0.6.2"
@@ -2692,6 +2716,7 @@ dependencies = [
  "midly",
  "once_cell",
  "palette",
+ "quanta",
  "rand",
  "ratatui",
  "toml",
diff --git a/crates/tek_cli/src/cli_sequencer.rs b/crates/tek_cli/src/cli_sequencer.rs
index 54a6abea..3b9433e7 100644
--- a/crates/tek_cli/src/cli_sequencer.rs
+++ b/crates/tek_cli/src/cli_sequencer.rs
@@ -1,5 +1,5 @@
 use tek_api::JackActivate;
-use tek_core::{*, clap::{self, Parser}};
+use tek_core::{*, jack::{MidiIn, MidiOut}, clap::{self, Parser}};
 
 pub fn main () -> Usually<()> {
     SequencerCli::parse().run()
@@ -22,6 +22,11 @@ impl SequencerCli {
     fn run (&self) -> Usually<()> {
         Tui::run(JackClient::new("tek_sequencer")?.activate_with(|jack|{
             let mut app = tek_tui::SequencerTui::try_from(jack)?;
+            // TODO: create from arguments
+            let midi_in = app.jack.read().unwrap().register_port("in", MidiIn::default())?;
+            app.player.midi_ins.push(midi_in);
+            let midi_out = app.jack.read().unwrap().register_port("out", MidiOut::default())?;
+            app.player.midi_outs.push(midi_out);
             if let Some(_) = self.name.as_ref() {
                 // TODO: sequencer.name = Arc::new(RwLock::new(name.clone()));
             }
diff --git a/crates/tek_core/Cargo.toml b/crates/tek_core/Cargo.toml
index 80ec514e..dbee0657 100644
--- a/crates/tek_core/Cargo.toml
+++ b/crates/tek_core/Cargo.toml
@@ -17,6 +17,7 @@ palette = { version = "0.7.6", features = [ "random" ] }
 rand = "0.8.5"
 ratatui = { version = "0.26.3", features = [ "unstable-widget-ref", "underline-color" ] }
 toml = "0.8.12"
+quanta = "0.12.3"
 #no_deadlocks = "1.3.2"
 
 [dev-dependencies]
diff --git a/crates/tek_core/src/focus.rs b/crates/tek_core/src/focus.rs
index 18bb706c..b3d27923 100644
--- a/crates/tek_core/src/focus.rs
+++ b/crates/tek_core/src/focus.rs
@@ -57,7 +57,6 @@ impl<F: HasFocus + HasEnter + FocusGrid + FocusOrder> Command<F> for FocusComman
             Right => { state.focus_right(); },
             Enter => { state.focus_enter(); },
             Exit  => { state.focus_exit();  },
-            _ => {}
         }
         Ok(None)
     }
@@ -92,7 +91,7 @@ pub trait HasEnter: HasFocus {
     }
     /// Exit the currently entered component
     fn focus_exit (&mut self) {
-        self.set_entered(true);
+        self.set_entered(false);
         self.focus_updated();
     }
 }
diff --git a/crates/tek_core/src/time.rs b/crates/tek_core/src/time.rs
index e189ec71..5416beb8 100644
--- a/crates/tek_core/src/time.rs
+++ b/crates/tek_core/src/time.rs
@@ -359,6 +359,59 @@ pub fn pulses_to_name (pulses: usize) -> &'static str {
     for (length, name) in &NOTE_DURATIONS { if *length == pulses { return name } }
     ""
 }
+
+pub struct PerfModel {
+    pub enabled: bool,
+    clock:  quanta::Clock,
+    // In nanoseconds
+    used:   AtomicF64,
+    // In microseconds
+    period: AtomicF64,
+}
+
+impl Default for PerfModel {
+    fn default () -> Self {
+        Self {
+            enabled: true,
+            clock:   quanta::Clock::new(),
+            used:    Default::default(),
+            period:  Default::default(),
+        }
+    }
+}
+
+impl PerfModel {
+    pub fn get_t0 (&self) -> Option<u64> {
+        if self.enabled {
+            Some(self.clock.raw())
+        } else {
+            None
+        }
+    }
+    pub fn update (&self, t0: Option<u64>, scope: &jack::ProcessScope) {
+        if let Some(t0) = t0 {
+            let t1 = self.clock.raw();
+            self.used.store(
+                self.clock.delta_as_nanos(t0, t1) as f64,
+                Ordering::Relaxed,
+            );
+            self.period.store(
+                scope.cycle_times().unwrap().period_usecs as f64,
+                Ordering::Relaxed,
+            );
+        }
+    }
+    pub fn percentage (&self) -> Option<f64> {
+        let period = self.period.load(Ordering::Relaxed) * 1000.0;
+        if period > 0.0 {
+            let used = self.used.load(Ordering::Relaxed);
+            Some(100.0 * used / period)
+        } else {
+            None
+        }
+    }
+}
+
 #[cfg(test)]
 mod test {
     use super::*;
diff --git a/crates/tek_tui/src/tui_apps.rs b/crates/tek_tui/src/tui_apps.rs
index 988b3ffd..17daf512 100644
--- a/crates/tek_tui/src/tui_apps.rs
+++ b/crates/tek_tui/src/tui_apps.rs
@@ -23,6 +23,7 @@ pub struct SequencerTui {
     pub note_buf: Vec<u8>,
     pub midi_buf: Vec<Vec<Vec<u8>>>,
     pub focus:    FocusState<AppFocus<SequencerFocus>>,
+    pub perf:     PerfModel,
 }
 
 /// Root view for standalone `tek_arranger`
diff --git a/crates/tek_tui/src/tui_command.rs b/crates/tek_tui/src/tui_command.rs
index 92203079..7a0cd718 100644
--- a/crates/tek_tui/src/tui_command.rs
+++ b/crates/tek_tui/src/tui_command.rs
@@ -11,15 +11,13 @@ impl<T: TransportControl> Command<T> for TransportCommand {
         use TransportCommand::{Focus, Clock};
         use FocusCommand::{Next, Prev};
         use ClockCommand::{SetBpm, SetQuant, SetSync};
-        Ok(Some(match self {
-            Focus(Next) => { todo!() }
-            Focus(Prev) => { todo!() },
-            Focus(_)    => { unimplemented!() },
-            Clock(SetBpm(bpm))     => Clock(SetBpm(state.bpm().set(bpm))),
-            Clock(SetQuant(quant)) => Clock(SetQuant(state.quant().set(quant))),
-            Clock(SetSync(sync))   => Clock(SetSync(state.sync().set(sync))),
+        Ok(match self {
+            Focus(cmd)             => cmd.execute(state)?.map(Focus),
+            Clock(SetBpm(bpm))     => Some(Clock(SetBpm(state.bpm().set(bpm)))),
+            Clock(SetQuant(quant)) => Some(Clock(SetQuant(state.quant().set(quant)))),
+            Clock(SetSync(sync))   => Some(Clock(SetSync(state.sync().set(sync)))),
             _ => return Ok(None)
-        }))
+        })
     }
 }
 
diff --git a/crates/tek_tui/src/tui_content.rs b/crates/tek_tui/src/tui_content.rs
index 3ac092fd..29d94162 100644
--- a/crates/tek_tui/src/tui_content.rs
+++ b/crates/tek_tui/src/tui_content.rs
@@ -42,12 +42,18 @@ impl<'a, T: TransportViewState> Content for TransportView<'a, T> {
 impl Content for SequencerTui {
     type Engine = Tui;
     fn content (&self) -> impl Widget<Engine = Tui> {
-        col!(
-            widget(&TransportView(self)),
-            Split::right(20,
-                widget(&PhrasesView(self)),
-                widget(&PhraseView(self)),
-            ).min_y(20)
+        lay!(
+            col!(
+                widget(&TransportView(self)),
+                Split::right(20,
+                    widget(&PhrasesView(self)),
+                    widget(&PhraseView(self)),
+                ).min_y(20)
+            ),
+            self.perf.percentage()
+                .map(|cpu|format!("{cpu:.03}%"))
+                .fg(Color::Rgb(255,128,0))
+                .align_sw(),
         )
     }
 }
diff --git a/crates/tek_tui/src/tui_control.rs b/crates/tek_tui/src/tui_control.rs
index 085be65c..224ca03c 100644
--- a/crates/tek_tui/src/tui_control.rs
+++ b/crates/tek_tui/src/tui_control.rs
@@ -1,9 +1,20 @@
 use crate::*;
 
-pub trait TransportControl: ClockApi {
+pub trait TransportControl: ClockApi + FocusGrid + HasEnter {
     fn transport_focused (&self) -> Option<TransportFocus>;
 }
 
+pub trait SequencerControl: TransportControl {}
+
+pub trait ArrangerControl: TransportControl {
+    fn selected (&self) -> ArrangerSelection;
+    fn selected_mut (&mut self) -> &mut ArrangerSelection;
+    fn activate (&mut self);
+    fn selected_phrase (&self) -> Option<Arc<RwLock<Phrase>>>;
+    fn toggle_loop (&mut self);
+    fn randomize_color (&mut self);
+}
+
 impl TransportControl for TransportTui {
     fn transport_focused (&self) -> Option<TransportFocus> {
         if let AppFocus::Content(focus) = self.focus.inner() {
@@ -34,19 +45,8 @@ impl TransportControl for ArrangerTui {
     }
 }
 
-pub trait SequencerControl: TransportControl {}
-
 impl SequencerControl for SequencerTui {}
 
-pub trait ArrangerControl: TransportControl {
-    fn selected (&self) -> ArrangerSelection;
-    fn selected_mut (&mut self) -> &mut ArrangerSelection;
-    fn activate (&mut self);
-    fn selected_phrase (&self) -> Option<Arc<RwLock<Phrase>>>;
-    fn toggle_loop (&mut self);
-    fn randomize_color (&mut self);
-}
-
 impl ArrangerControl for ArrangerTui {
     fn selected (&self) -> ArrangerSelection {
         self.selected
diff --git a/crates/tek_tui/src/tui_init.rs b/crates/tek_tui/src/tui_init.rs
index d6073291..613c1816 100644
--- a/crates/tek_tui/src/tui_init.rs
+++ b/crates/tek_tui/src/tui_init.rs
@@ -30,7 +30,8 @@ impl TryFrom<&Arc<RwLock<JackClient>>> for SequencerTui {
             midi_buf:  vec![vec![];65536],
             note_buf:  vec![],
             clock,
-            focus:     FocusState::Entered(AppFocus::Content(SequencerFocus::Transport(TransportFocus::Bpm)))
+            focus:     FocusState::Entered(AppFocus::Content(SequencerFocus::Transport(TransportFocus::Bpm))),
+            perf:      PerfModel::default(),
         })
     }
 }
diff --git a/crates/tek_tui/src/tui_jack.rs b/crates/tek_tui/src/tui_jack.rs
index 4a2b0d5b..768f2f51 100644
--- a/crates/tek_tui/src/tui_jack.rs
+++ b/crates/tek_tui/src/tui_jack.rs
@@ -8,6 +8,7 @@ impl Audio for TransportTui {
 
 impl Audio for SequencerTui {
     fn process (&mut self, client: &Client, scope: &ProcessScope) -> Control {
+        let t0 = self.perf.get_t0();
         if ClockAudio(self).process(client, scope) == Control::Quit {
             return Control::Quit
         }
@@ -18,6 +19,7 @@ impl Audio for SequencerTui {
         ).process(client, scope) == Control::Quit {
             return Control::Quit
         }
+        self.perf.update(t0, scope);
         Control::Continue
     }
 }
diff --git a/crates/tek_tui/src/tui_model.rs b/crates/tek_tui/src/tui_model.rs
index 04b88e00..41b47178 100644
--- a/crates/tek_tui/src/tui_model.rs
+++ b/crates/tek_tui/src/tui_model.rs
@@ -49,9 +49,9 @@ pub struct PhrasePlayerModel {
     /// Send all notes off
     pub(crate) reset:       bool, // TODO?: after Some(nframes)
     /// Record from MIDI ports to current sequence.
-    pub(crate) midi_ins:    Vec<Port<MidiIn>>,
+    pub midi_ins:    Vec<Port<MidiIn>>,
     /// Play from current sequence to MIDI ports
-    pub(crate) midi_outs:   Vec<Port<MidiOut>>,
+    pub midi_outs:   Vec<Port<MidiOut>>,
     /// Notes currently held at input
     pub(crate) notes_in:    Arc<RwLock<[bool; 128]>>,
     /// Notes currently held at output