Following byte is ignored and should be used when calculating pitch of custom instrument: https://github.com/koca2000/NoteBlockAPI/blob/20b9b46181ba476507d9920fc920531a5128da4b/src/main/java/com/xxmicloxx/NoteBlockAPI/utils/NBSDecoder.java#L176
Following byte is ignored and should be used when calculating pitch of custom instrument:
NoteBlockAPI/src/main/java/com/xxmicloxx/NoteBlockAPI/utils/NBSDecoder.java
Line 176 in 20b9b46