Musical instrument, similar to the accordion and the like, for easily producing rapid harmonic sequences

Claim 1

A musical instrument, similar to the accordian and the like, containing two standard accordion bass section devices, one on each side of the bellows, facing one another, on each of which preset chords can be produced by depressing single buttons, and on each of which individual bass tones can be produced by depressing other single buttons, each device comprising a plurality of longitudinally arranged transverse rows of buttons for preset chords and individual bass tones tuned respectively for particular keys, each of which transverse rows is arranged to contain a button activating an individual bass tone tuned as the fundamental bass for that particular key, a button activating a preset chord tuned as the major triad for the same key and a button activating a preset chord tuned as the minor triad for the same key, such that a wide variety of rapid harmonic sequences of resultant sum chords played simultaneously or alternately with individual bass tones or alternately with preset chords can be easily produced.