Piano accordion is a type of musical instrument which sound is produced by pressing the keys and basses. Keys that are used to be white and black are placed on the right-hand section, while basses are disposed through rows and columns on the left-hand section.
Piano accordion is comprised of the following main parts:
On the right side of accordion, besides its main parts, there are keyboard sound registers and accordion belts. On the left side of accordion there are basses sound registers, bellows button and left hand belt for expanding the bellows.