diff --git a/packages/core/controls.mjs b/packages/core/controls.mjs
index 6cac6e54..d1a9ce7f 100644
--- a/packages/core/controls.mjs
+++ b/packages/core/controls.mjs
@@ -1066,6 +1066,7 @@ const generic_params = [
    */
   ['waveloss'],
   // TODO: midi effects?
+  ['midicmd'],
   ['dur'],
   // ['modwheel'],
   ['expression'],
diff --git a/packages/midi/midi.mjs b/packages/midi/midi.mjs
index 98509b46..07e6e65c 100644
--- a/packages/midi/midi.mjs
+++ b/packages/midi/midi.mjs
@@ -78,6 +78,19 @@ function getDevice(output, outputs) {
   return IACOutput ?? outputs[0];
 }
 
+// send start/stop messages to outputs when repl starts/stops
+if (typeof window !== 'undefined') {
+  window.addEventListener('message', (e) => {
+    if (!WebMidi?.enabled) {
+      return;
+    }
+    if (e.data === 'strudel-stop') {
+      WebMidi.outputs.forEach((output) => output.sendStop());
+    }
+    // cannot start here, since we have no timing info, see sendStart below
+  });
+}
+
 Pattern.prototype.midi = function (output) {
   if (isPattern(output)) {
     throw new Error(
@@ -103,6 +116,7 @@ Pattern.prototype.midi = function (output) {
 
   return this.onTrigger((time, hap, currentTime, cps) => {
     if (!WebMidi.enabled) {
+      console.log('not enabled');
       return;
     }
     const device = getDevice(output, WebMidi.outputs);
@@ -113,7 +127,7 @@ Pattern.prototype.midi = function (output) {
     const timeOffsetString = `+${offset}`;
 
     // destructure value
-    const { note, nrpnn, nrpv, ccn, ccv, midichan = 1 } = hap.value;
+    const { note, nrpnn, nrpv, ccn, ccv, midichan = 1, midicmd } = hap.value;
     const velocity = hap.context?.velocity ?? 0.9; // TODO: refactor velocity
 
     // note off messages will often a few ms arrive late, try to prevent glitching by subtracting from the duration length
@@ -125,7 +139,7 @@ Pattern.prototype.midi = function (output) {
         time: timeOffsetString,
       });
     }
-    if (ccv && ccn) {
+    if (ccv !== undefined && ccn !== undefined) {
       if (typeof ccv !== 'number' || ccv < 0 || ccv > 1) {
         throw new Error('expected ccv to be a number between 0 and 1');
       }
@@ -135,5 +149,18 @@ Pattern.prototype.midi = function (output) {
       const scaled = Math.round(ccv * 127);
       device.sendControlChange(ccn, scaled, midichan, { time: timeOffsetString });
     }
+    if (hap.whole.begin + 0 === 0) {
+      // we need to start here because we have the timing info
+      device.sendStart({ time: timeOffsetString });
+    }
+    if (['clock', 'midiClock'].includes(midicmd)) {
+      device.sendClock({ time: timeOffsetString });
+    } else if (['start'].includes(midicmd)) {
+      device.sendStart({ time: timeOffsetString });
+    } else if (['stop'].includes(midicmd)) {
+      device.sendStop({ time: timeOffsetString });
+    } else if (['continue'].includes(midicmd)) {
+      device.sendContinue({ time: timeOffsetString });
+    }
   });
 };
diff --git a/packages/superdough/dspworklet.mjs b/packages/superdough/dspworklet.mjs
index 1c109452..deff485a 100644
--- a/packages/superdough/dspworklet.mjs
+++ b/packages/superdough/dspworklet.mjs
@@ -14,7 +14,6 @@ class MyProcessor extends AudioWorkletProcessor {
       if(e.data==='stop') {
         this.stopped = true;
       } else if(e.data?.dough) {
-        const deadline = e.data.time-currentTime;
         __q.push(e.data)
       } else {
         msg?.(e.data)
diff --git a/packages/superdough/package.json b/packages/superdough/package.json
index 69ba6f8c..387749c8 100644
--- a/packages/superdough/package.json
+++ b/packages/superdough/package.json
@@ -1,6 +1,6 @@
 {
   "name": "superdough",
-  "version": "0.9.8",
+  "version": "0.9.9",
   "description": "simple web audio synth and sampler intended for live coding. inspired by superdirt and webdirt.",
   "main": "index.mjs",
   "type": "module",
diff --git a/website/src/repl/Repl.jsx b/website/src/repl/Repl.jsx
index fe32e741..4002eba8 100644
--- a/website/src/repl/Repl.jsx
+++ b/website/src/repl/Repl.jsx
@@ -33,7 +33,7 @@ const supabase = createClient(
   'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJzdXBhYmFzZSIsInJlZiI6InBpZHhkc3hwaGxoempuem1pZnRoIiwicm9sZSI6ImFub24iLCJpYXQiOjE2NTYyMzA1NTYsImV4cCI6MTk3MTgwNjU1Nn0.bqlw7802fsWRnqU5BLYtmXk_k-D1VFmbkHMywWc15NM',
 );
 
-const modules = [
+let modules = [
   import('@strudel.cycles/core'),
   import('@strudel.cycles/tonal'),
   import('@strudel.cycles/mini'),
@@ -45,13 +45,13 @@ const modules = [
   import('@strudel.cycles/csound'),
 ];
 if (isTauri()) {
-  modules.concat([
+  modules = modules.concat([
     import('@strudel/desktopbridge/loggerbridge.mjs'),
     import('@strudel/desktopbridge/midibridge.mjs'),
     import('@strudel/desktopbridge/oscbridge.mjs'),
   ]);
 } else {
-  modules.concat([import('@strudel.cycles/midi'), import('@strudel.cycles/osc')]);
+  modules = modules.concat([import('@strudel.cycles/midi'), import('@strudel.cycles/osc')]);
 }
 
 const modulesLoading = evalScope(
@@ -153,6 +153,8 @@ export function Repl({ embedded = false }) {
         if (!play) {
           cleanupDraw(false);
           window.postMessage('strudel-stop');
+        } else {
+          window.postMessage('strudel-start');
         }
       },
       drawContext,