Andrey Plays Accordion (Bayan)
Bass patterns
A notebook for the left hand.
Staff editor
Click a pale rest to add a note. Drag notes to change pitch. Chord adds notes at the same time. Lock beat pins the selected step; L toggles it.
Button assignments and step order
Finger: 1 thumb, 2 index, 3 middle, 4 ring, 5 little. Leave unassigned when you are still deciding.