Abstract: An harmonica having a conventional body shaped so as to form a series of adjacent cavities and a plurality of reeds each of which is responsive to the passage of air to produce an audible musical note of a certain fixed pitch. Two reeds are associated with each cavity such that one reed is responsive to blowing into the cavity to produce a blownote and the other is responsive to drawing on such cavity to produce a drawnote. In one embodiment, the reeds are constructed and arranged such that the blownotes include the first, fourth and sixth notes of the major scale of a keynote and all the drawnotes are notes of the major scale of that keynote. Harmonicas utilizing modal scales are also provided.