diff --git a/modules/singer/playground/pages/Voice.tsx b/modules/singer/playground/pages/Voice.tsx
index 94ab7ff4..0168ba9a 100644
--- a/modules/singer/playground/pages/Voice.tsx
+++ b/modules/singer/playground/pages/Voice.tsx
@@ -1,7 +1,7 @@
 import { Voice } from '@/core/voice';
 import SynthUtils from '@/core/synthUtils';
 import * as Tone from 'tone';
-import { _state, noteValueToSeconds, _defaultSynth, _polySynth } from '@/singer';
+import { _state, noteValueToSeconds, _defaultSynth, /*_polySynth*/ } from '@/singer';
 import { setupSynthUtils } from '@/core/synthUtils';
 import { injected } from '@/index';
 
diff --git a/modules/singer/src/singer.ts b/modules/singer/src/singer.ts
index b13ec776..c33b51ed 100644
--- a/modules/singer/src/singer.ts
+++ b/modules/singer/src/singer.ts
@@ -23,7 +23,7 @@ const currentpitch = new CurrentPitch(testKeySignature, new Temperament(), 1, 4)
 const _stateObj = { ..._defaultSynthStateValues };
 
 /** Proxy to the synth state parameters. */
-const _state = new Proxy(_stateObj, {
+export const _state = new Proxy(_stateObj, {
     set: (_, key, value) => {
         if (key === 'beatsPerMinute') {
             _stateObj.beatsPerMinute = value;
@@ -37,7 +37,7 @@ const _state = new Proxy(_stateObj, {
 });
 
 /** Default synth **/
-const _defaultSynth = new Tone.Synth().toDestination();
+export const _defaultSynth = new Tone.Synth().toDestination();
 
 // -- private functions ----------------------------------------------------------------------------