diff --git a/src/main/java/com/github/hhhzzzsss/songplayer/conversion/MidiConverter.java b/src/main/java/com/github/hhhzzzsss/songplayer/conversion/MidiConverter.java
index cf97b2a..764967d 100644
--- a/src/main/java/com/github/hhhzzzsss/songplayer/conversion/MidiConverter.java
+++ b/src/main/java/com/github/hhhzzzsss/songplayer/conversion/MidiConverter.java
@@ -147,8 +147,12 @@ public class MidiConverter {
 			return null;
 		}
 
-		int pitch = (midiPitch-instrument.offset) + SongHandler.getInstance().pitch;
-		int noteId = pitch + instrument.instrumentId*25;
+		int pitch = ((midiPitch-instrument.offset) + SongHandler.getInstance().pitch) + 33;
+
+		while (pitch < 33) pitch += 12;
+		while (pitch > 57) pitch -= 12;
+
+		int noteId = (pitch - 33) + instrument.instrumentId*25;
 		long time = microTime / 1000L;
 
 		return new Note(noteId, time);