Chromatic accordion

1. What is the difference between diatonic and chromatic accordions?
2. Are accordions chromatic?

What is the difference between diatonic and chromatic accordions?

Ranging from a single rows of buttons up to multiple rows of buttons, the fundamental difference between the Diatonic Accordion and the Piano/Chromatic Accordions is in the reeds – they are bisonoric, meaning that if you pull the bellows the notes are different then when you push.

Are accordions chromatic?

The bass-side keyboard is usually the Stradella system or one of the various free-bass systems. Included among chromatic button accordions are the Russian bayan and Schrammel accordion. There can be 3 to 5 rows of vertical treble buttons.
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Chromatic button accordion.