The accordion frame was developed with the aim of allowing the sound bars with pickups to remain permanently wired to the respective support frame, thus eliminating the need to disconnect/connect the pickups contacts when removing or attaching the sound bars for transport.

The base frame, including the pedal unit, can be pushed together similarly to an accordion to save space during transport. The playing table is divided into the front and rear rows of bars, whereby the sound bars can remain permanently secured to the support frame in an alternating arrangement thanks to special bar posts, but can still be easily removed if necessary. The support frames also contain the socket strips for connecting the pickups. The rear support frame also contains the complete damping unit, including the springs.