Patent ID: 9082386
Filing Date: 2015-07-14
Classification: G09B,G10C,G10H

Abstract:
1. A keyboard for controlling musical notes, comprising: a plurality of keys arranged in at least one row and a plurality of columns in a front key area; a plurality of keys arranged in at least one row and a plurality of columns in a rear key area; a row of keys in the front key area comprising keys in a first group and zero or more keys in a second group, wherein the top playing surfaces of the keys in the second group, if present, are raised above the top playing surfaces of the keys in the first group a row of keys in the rear key area comprising keys in a third group and keys in a fourth group, wherein the top playing surfaces of the keys in the fourth group are raised above the top playing surfaces of the keys in the third group a first key in the first group; a second key in the third group, in substantially the same column as the first key, wherein the first key is wider than the second key; a musical pitch value selection means operationally coupled to each of the keys; and wherein the first key and the second key select the same pitch.