British chromatic accordions have three rows of diatonic scales separated by an interval of a semitone, as on Irish boxes, but usually have accordion bass in the left hand.
Uncomfortable, cramped fingering that requires "finger crossing", passing one finger under or over another finger being used to press a button in order to play the next note. This arrangement offers poor chording possibilities, still requires a great deal of bellows reversals and does not greatly make transposing to other keys much easier. Overall this layout compares poorly with extended diatonic accordions or accordions that use an Atzarin layout.
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!
| B/C/C# Layout | Full Layout
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