diff --git a/packages/core/pattern.mjs b/packages/core/pattern.mjs
index 6bd05e28..59b33816 100644
--- a/packages/core/pattern.mjs
+++ b/packages/core/pattern.mjs
@@ -973,6 +973,10 @@ export class Pattern {
   _velocity(velocity) {
     return this._withContext((context) => ({ ...context, velocity: (context.velocity || 1) * velocity }));
   }
+
+  _loopAt(factor,cps=1) {
+    return this.speed((1/factor)*cps).unit("c").slow(factor)
+  }
 }
 
 // TODO - adopt value.mjs fully..
@@ -1396,6 +1400,10 @@ Pattern.prototype.chunkBack = function (...args) {
   args = args.map(reify);
   return patternify2(Pattern.prototype._chunkBack)(...args, this);
 };
+Pattern.prototype.loopAt = function (...args) {
+  args = args.map(reify);
+  return patternify2(Pattern.prototype._loopAt)(...args, this);
+};
 Pattern.prototype.zoom = function (...args) {
   args = args.map(reify);
   return patternify2(Pattern.prototype._zoom)(...args, this);
diff --git a/packages/osc/osc.mjs b/packages/osc/osc.mjs
index 95030d6a..4d4ed55b 100644
--- a/packages/osc/osc.mjs
+++ b/packages/osc/osc.mjs
@@ -10,15 +10,19 @@ import { Pattern } from '@strudel.cycles/core';
 const comm = new OSC();
 comm.open();
 const latency = 0.1;
+let startedAt = -1;
 
 Pattern.prototype.osc = function () {
   return this._withHap((hap) => {
-    const onTrigger = (time, hap, currentTime) => {
+    const onTrigger = (time, hap, currentTime, cps, cycle, delta) => {
       // time should be audio time of onset
       // currentTime should be current time of audio context (slightly before time)
-      const keyvals = Object.entries(hap.value).flat();
-      const offset = (time - currentTime + latency) * 1000;
-      const ts = Math.floor(Date.now() + offset);
+      if (startedAt < 0) {
+        startedAt = Date.now() - (currentTime * 1000);
+      }
+      const controls = Object.assign({}, { cps: cps, cycle: cycle, delta: delta }, hap.value);
+      const keyvals = Object.entries(controls).flat();
+      const ts = Math.floor(startedAt + ((time + latency) * 1000));
       const message = new OSC.Message('/dirt/play', ...keyvals);
       const bundle = new OSC.Bundle([message], ts);
       bundle.timestamp(ts); // workaround for https://github.com/adzialocha/osc-js/issues/60
diff --git a/packages/react/src/hooks/useRepl.mjs b/packages/react/src/hooks/useRepl.mjs
index 4f3791d6..8db4bb0c 100644
--- a/packages/react/src/hooks/useRepl.mjs
+++ b/packages/react/src/hooks/useRepl.mjs
@@ -57,7 +57,14 @@ function useRepl({ tune, defaultSynth, autolink = true, onEvent, onDraw: onDrawP
             /* console.warn('no instrument chosen', event);
           throw new Error(`no instrument chosen for ${JSON.stringify(event)}`); */
           } else {
-            onTrigger(time, event, currentTime);
+            onTrigger(
+              time,
+              event,
+              currentTime,
+              1 /* cps */,
+              event.wholeOrPart().begin.valueOf(),
+              event.duration.valueOf(),
+            );
           }
         } catch (err) {
           console.warn(err);