1. A keyboard musical instrument, equipped with a keyboard consisting of white and black keys. They are arranged in such a manner, that each black key is located between two white keys, while each key corresponds to one sound. The keys are positioned on the keyboard to ensure that each octave corresponds to n keys, which can be grouped into two key sets: the left and the right one. The left group consists of black keys located between single white keys, and the right group consists of black keys located between single white keys, while each right group has one additional black key and one additional white key with respect to the left group. It is characterised in that each octave corresponds to 16 keys. The left group consists of three black keys located between four white keys. The right group consists of four black keys located between five white keys. The frequencies of successive sounds corresponding to particular keys form a geometrical sequence with the common ratio q2 = 1.044273782.
THREE NOVEL MUSICAL SCALES AND KEYBOARD PATTERNS OF NOVEL MUSICAL INSTRUMENTS FOR PLAYING SUCH MUSIC