Claviola

[1] Similar to a melodica (which is still in production), but worn like an accordion and played like a bagpipe, the claviola has a set of piano keys on the right side that range 2½ octaves.

In combination with the pipes, the claviola uses reeds blown from the "wrong" side compared to reeds in most Western free-reed instruments, resulting in a much mellower, less reedy tone, and pitch dependent on the pipe length.

The player can use his or her left hand to shade or cover the pipe openings, to bend notes or add vibrato.

[2][3] The Hohner Claviola is best known for its use by the band One Ring Zero and the jazz/folk musician Misha Alperin (Moscow Art Trio).

The name "Claviola" was also used by the German firm of Ludwig Hupfeld for one type of their self-playing pianos which were made from 1904 until about 1930.