diff --git a/app/core/native_render.py b/app/core/native_render.py
index 71417e2..188857a 100644
--- a/app/core/native_render.py
+++ b/app/core/native_render.py
@@ -175,7 +175,7 @@ def bridge_state_preset_b64(channel=None, plugin_path=None) -> str:
     return ""
 
 
-EXPRESSION_CC = 7  # TEST: CC7 thay CC11 de kiem tra VSTi nhan CC (revert 11 khi xong)
+EXPRESSION_CC = 11  # CC11 expression
 
 def _expression_events(notes, bpm, sample_rate, grid=64):
     """Sinh CC11 events sample-accurate từ expression_curve mỗi note.
diff --git a/app/static/js/app.jsx b/app/static/js/app.jsx
index dc74d14..a383f3e 100644
--- a/app/static/js/app.jsx
+++ b/app/static/js/app.jsx
@@ -746,7 +746,7 @@ const _cc11ValueAt = (curve, ratio) => {
 };
 // ponytail: duplicate interp cc11ValueAt (component) — consolidate khi curve
 // thành field track-level.
-const EXPRESSION_CC = 7; // TEST: CC7 thay CC11 de kiem tra VSTi nhan CC (revert 11 khi xong)
+const EXPRESSION_CC = 11; // CC11 expression — TEST 7 da xong, revert 11
 const scheduleNoteExpressionCC11 = (track, note, ch, startWallTime, startSec, durSec) => {
   try {
     const curve = Array.isArray(note && note.expression_curve) ? note.expression_curve : [];
diff --git a/app/static/js/app.precompiled.js b/app/static/js/app.precompiled.js
index 0521aef..8987830 100644
--- a/app/static/js/app.precompiled.js
+++ b/app/static/js/app.precompiled.js
@@ -143,7 +143,7 @@ function sendMidiVolumeCC7(t,list,audible){const volDb=typeof t.volumeDb==='numb
 // chống timer stale sau stop/loop restart (pattern scheduleMidiNoteDispatch).
 let _cc11Timers=new Set();const clearAllCC11Timers=()=>{_cc11Timers.forEach(t=>{try{clearTimeout(t);}catch(e){}});_cc11Timers.clear();};const _cc11ValueAt=(curve,ratio)=>{if(!curve||!curve.length)return 127;if(curve.length===1)return curve[0].value;const pts=curve.slice().sort((a,b)=>a.position_ratio-b.position_ratio);if(ratio<=pts[0].position_ratio)return pts[0].value;if(ratio>=pts[pts.length-1].position_ratio)return pts[pts.length-1].value;for(let i=1;i<pts.length;i++){if(ratio<=pts[i].position_ratio){const a=pts[i-1],b=pts[i];const t=(ratio-a.position_ratio)/(b.position_ratio-a.position_ratio||1);return Math.round(a.value+(b.value-a.value)*t);}}return pts[pts.length-1].value;};// ponytail: duplicate interp cc11ValueAt (component) — consolidate khi curve
 // thành field track-level.
-const EXPRESSION_CC=7;// TEST: CC7 thay CC11 de kiem tra VSTi nhan CC (revert 11 khi xong)
+const EXPRESSION_CC=11;// CC11 expression — TEST 7 da xong, revert 11
 const scheduleNoteExpressionCC11=(track,note,ch,startWallTime,startSec,durSec)=>{try{const curve=Array.isArray(note&&note.expression_curve)?note.expression_curve:[];if(!curve||!curve.length)return;const epoch=_nativePlayEpoch;const isPerc=!!(track&&track.synth_engine&&track.synth_engine.soundfont_bank===128)||!!(track&&track.is_percussion);const ctx=getAudioContext();const GRID_MS=16;const n=Math.max(1,Math.ceil(durSec*1000/GRID_MS));const stepMs=durSec*1000/n;for(let i=0;i<=n;i++){const ratio=Math.min(1,i/n);const wallMs=(startWallTime+startSec)*1000+i*stepMs;const delayMs=Math.max(0,wallMs-ctx.currentTime*1000);const val=_cc11ValueAt(curve,ratio);const timer=setTimeout(()=>{if(epoch!==_nativePlayEpoch)return;if(window.SonicMidiRouter&&window.SonicMidiRouter.isBridgeActive&&window.SonicMidiRouter.isBridgeActive()){window.SonicMidiRouter.pushEvent({cmd:'CC',channel:track?track.id:0,pitch:EXPRESSION_CC,velocity:0,data2:val,percussion:isPerc});return;}if(window.SonicSF&&typeof window.SonicSF.controllerChange==='function'){window.SonicSF.controllerChange(ch,EXPRESSION_CC,val);}},delayMs);_cc11Timers.add(timer);}}catch(e){console.warn('[CC11] schedule error:',e);}};// MAIN SESSION end-time (seconds): endtime of the items ON the session's own
 // tracks only — audio clips, MIDI items, and section-item bounds. Section-TAB
 // content is deliberately IGNORED here: when played inside the main session the
diff --git a/app/templates/index.html b/app/templates/index.html
index 960ac3b..dba9630 100644
--- a/app/templates/index.html
+++ b/app/templates/index.html
@@ -51,7 +51,7 @@
     <script src="/static/js/services/promptTemplateManager.js?v=202607281039"></script>
     <script src="/static/js/services/undoRedoEngine.js?v=202607290941"></script>
     <script src="/static/js/services/chordTheory.js?v=202608211300"></script>
-    <script src="/static/js/app.precompiled.js?v=202608292100" defer></script>
+    <script src="/static/js/app.precompiled.js?v=202608292200" defer></script>
     <link rel="stylesheet" href="/static/css/styles.css?v=202607271016">
     <style>
         :root {