They can also be used to play notes which are usually unplayable such as overlapping notes or notes which are blocked by Bedrock. They can only play piano, drum, bass, sax, flute and spanish guitar notes and sheets such as Sheet Music: Spooky and Sheet Music: Winterfest cannot be played.
The volume can also be adjusted, however, the sound can only be softened. The maximum volume is 100 which is the same as a regular sheet music. It can be reduced by changing the value to less than 100.