Switch the instrument
To switch the instrument, make sure the instrument is visible. Then tap on the instrument title:

Note: This does not necessarily change the playback sound. Learn more on how to change playback sounds here
Select a different instrument from the list.
Currently available instruments:
- Piano (interactive)
- Guitar (6 strings)
- Bass (4 strings)
- Bass (5 strings)
- Ukulele
- Violin
- Viola
- Cello