Patent ID: 7667119

Claim:
A musical instrument comprising: (a) a first keyboard comprising: (i) a first plurality of long keys; (ii) a first plurality of short keys; (iii) a first side; (iv) a second side; and (v) wherein said first side is closer to said first plurality of short keys than said second side; (b) a second keyboard comprising: (i) a second plurality of long keys; (ii) a second plurality of short keys; (iii) a third side; (iv) a fourth side; and (v) wherein said third side is closer to said second plurality of short keys than said fourth side; (c) wherein a distance between said first side and said third side is shorter than a distance between said second side and said fourth side; and (d) a shoulder harness coupled to said first keyboard and said second keyboard, wherein the first and second keyboards are arranged by the harness in a playable position on the chest of a single musician, and the body holding the first and second keyboards are in a rigid, fixed relationship to each other.