What's with all the little knobs on an accordion? Isn't there a keyboard on one side that's enough?

Mainly with it to play the accompaniment part of the

Accordion bass is a very representative part of the accordion, a lot of the first time to see the accordion, the most interested in addition to the bellows is the bass. Maybe now there are still people who are not clear about what the bass is in the end, in fact, the bass is the accordion's left-hand bass keys accustomed to, that is, some users asked the "small bumps", "bass" is a foreign language translation, that is, "bass" means. The word "bass" is a translation of the foreign word "bass". The number of basses in a piano is generally referred to as the number of "basses" in the piano.

The basses are arranged in two, three, four, five or six rows, depending on the size of the instrument. We use them mainly for accompaniment, but they can also play melodies (e.g. Bach's compositions).

There are several types of basses depending on the size of the accordion: 8, 12, 24, 32, 48, 80, 96, 120 and 184.