We will be expanding this section soon. Meanwhile, check out our Celtic Accordion Music List.
Depending on the model, the accordion can be described as single-action (diatonic type) or double-action (chromatic type). Double-action (unisonoric) accordions produce the same notes when the bellows are expanding as when they are contracting, while single-action (or bisonoric) accordions give different notes when the player expands and contracts the bellows. For reasons that are obvious if you’ve ever seen one in action, single-action models are sometimes called “push-pull” accordions.