C/F Club Model Bisonoric Accordion Keyboard Layout

Although the Club Model Accordion favours a very limited number of musical keys, in theory, you can play in any key, although some are far more difficult than others. Some keys will be easier in predominantly one direction of the bellows and others will require a lot of bellows reversals. The unisonoric button in the middle of the instrument will force experienced players of regular diatonic accordions to relearn fingering patterns. More info.

If you like bisonoric accordions but want to play any kind of music in any key with similar ease, much better chording, much smoother, easier bellows work with less reversals, and you are willing to learn new fingering patterns, you should think about getting an Atzarin instrument!