diff --git a/client/public/version.js b/client/public/version.js
index fd3ee13..9d73a1a 100644
--- a/client/public/version.js
+++ b/client/public/version.js
@@ -1,5 +1,5 @@
 // Maintainer-controlled web client version.
 // Format: YYYY.MM.DD Rn (example: 2026.02.20 R2)
-window.CHGRID_WEB_VERSION = "2026.02.23 R220";
+window.CHGRID_WEB_VERSION = "2026.02.23 R221";
 // Optional display timezone for timestamps. Falls back to America/Detroit if unset/invalid.
 window.CHGRID_TIME_ZONE = "America/Detroit";
diff --git a/client/src/main.ts b/client/src/main.ts
index 5c9b076..165fb3d 100644
--- a/client/src/main.ts
+++ b/client/src/main.ts
@@ -991,7 +991,7 @@ function getPianoParams(item: WorldItem): {
 
 /** Returns default voice mode for a given piano instrument. */
 function defaultsVoiceModeForInstrument(instrument: PianoInstrumentId): 'mono' | 'poly' {
-  if (instrument === 'bass' || instrument === 'violin' || instrument === 'brass') return 'mono';
+  if (instrument === 'bass' || instrument === 'violin') return 'mono';
   return 'poly';
 }
 
@@ -1243,7 +1243,7 @@ async function previewPianoSettingChange(
     'preview',
     Math.max(0, Math.min(127, 60 + octave * 12)),
     instrument,
-    'poly',
+    current.voiceMode,
     attack,
     decay,
     release,