there is no audio playing when midi notes are pressed, also, get rid of the extra files like the sequencer etc. clean it up and make it work.

index.html

@@ -219,7 +219,6 @@
             </div>
         </div>
     </div>
-    
     <script src="https://unpkg.com/tone@14.7.77/build/Tone.js"></script>
     <script src="script.js"></script>
     <script>

script.js

@@ -1,4 +1,5 @@
 
+
 // Tone.js setup
 let synth;
 let filter;
@@ -8,6 +9,7 @@ let delay;
 let analyser;
 let activeNotes = new Map();
 let filterEnvelope;
+let isPlaying = false;
 
 // Initialize audio context on first interaction
 let audioContextStarted = false;
@@ -47,7 +49,6 @@ function setupSynth() {
     if (filterEnvelope) {
         filterEnvelope.dispose();
     }
-    
     // Create effects
     reverb = new Tone.Reverb({
         decay: 2,
@@ -73,11 +74,13 @@ function setupSynth() {
     }).connect(delay);
     
     // Create filter envelope
-    filterEnvelope = new Tone.Envelope({
+    filterEnvelope = new Tone.FrequencyEnvelope({
         attack: 0.1,
         decay: 0.3,
         sustain: 0.5,
-        release: 1.0
+        release: 1.0,
+        baseFrequency: 200,
+        octaves: 4
     });
     
     // Create main synth
@@ -172,14 +175,17 @@ function onMIDIMessage(message) {
     
     updateActiveNotesDisplay();
 }
-
 function noteOn(note, velocity) {
-    if (!synth) return;
+    if (!synth) {
+        // Initialize audio context and synth on first note
+        initAudioContext();
+        setupSynth();
+    }
     
     const noteName = Tone.Frequency(note, "midi").toNote();
     const velocityNorm = velocity / 127;
     
-    synth.triggerAttack(noteName, undefined, velocityNorm);
+    synth.triggerAttack(noteName, Tone.now(), velocityNorm);
     activeNotes.set(note, { name: noteName, velocity: velocity });
     
     console.log(`Note On: ${noteName}, Velocity: ${velocity}`);
@@ -189,12 +195,11 @@ function noteOff(note) {
     if (!synth) return;
     
     const noteName = Tone.Frequency(note, "midi").toNote();
-    synth.triggerRelease(noteName);
+    synth.triggerRelease(noteName, Tone.now());
     activeNotes.delete(note);
     
     console.log(`Note Off: ${noteName}`);
 }
-
 function updateActiveNotesDisplay() {
     const container = document.getElementById('active-notes');
     if (activeNotes.size === 0) {
@@ -313,7 +318,6 @@ function setupUIControls() {
         }
         drawADSREnvelope(); // Update ADSR visualization
     });
-    
     // Filter Envelope Controls
     document.getElementById('filter-attack').addEventListener('input', (e) => {
         const value = parseFloat(e.target.value);
@@ -350,15 +354,14 @@ function setupUIControls() {
         }
         drawFilterEnvelope(); // Update filter ADSR visualization
     });
-    
     // Reverb Wet
     document.getElementById('reverb-wet').addEventListener('input', (e) => {
         const value = parseFloat(e.target.value);
-document.getElementById('reverb-wet-value').textContent = `${Math.round(value * 100)}%`;
+        document.getElementById('reverb-wet-value').textContent = `${Math.round(value * 100)}%`;
         if (reverb) {
             reverb.wet.value = value;
         }
-    });
+});
     
     // Distortion Wet
     document.getElementById('distortion-wet').addEventListener('input', (e) => {