Push notes of the hybrid C#/D/G Bisonoric Accordion Keyboard Layout

Some hybrid bisonoric accordions combine the international diatonic accordion and Irish system accordion keyboard layouts in three rows of buttons. However, although it is a more versatile instrument than a two row Irish accordion or a two row diatonic accordion, it is not as powerful as other three row systems. Whilst several notes are duplicated, most of them are not duplicated in the opposite direction of the bellows, which means that a lot of bellows reversals are needed to play any tune. Only two keys can be played entirely on the draw and none can be played soley on the push. Unless used as two accordions in one, fingering patterns for tunes will have to be relearned.

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!