Concert accordion for special occasions. Holographic (rainbow) microfilaments (confetti glitter) faux mother of pearl keys and 3-reed “French” clarinet musette plus bassoon in a single tone chamber. Built-in Sensauser treble and bass microphones, mixed down to plug into any sound system. 41/120 bass with 9 treble registers and 5 bass registers, and 21 bellows folds (goes wider than my arm will allow!–)