Hinge harmonium
A harmonium you play with your laptop. Opening and closing the lid pumps the bellows, and the keyboard plays the notes, so the hinge does the job the hand-pumped bellows do on the real instrument.
A harmonium you play with your laptop. Opening and closing the lid pumps the bellows, and the keyboard plays the notes, so the hinge does the job the hand-pumped bellows do on the real instrument.