Accordion, has left keyboard with sub-keyboard comprising three rows with notes, where each group of any four consecutive notes in one row forms adjacent series with group of any four consecutive notes of other row

摘要

#CMT# #/CMT# The accordion has a left keyboard comprising seven rows and composed of two juxtaposed sub-keyboards. One sub-keyboard has four rows of buttons vertical and parallel to disposition of notes of a right keyboard. The other sub-keyboard has three rows with notes such that notes of adjacent rows are equal to a musical interval of k tones, where k varies from zero to five octave. Each group of any four consecutive notes in one row forms an adjacent series with a group of any four consecutive notes of another row. #CMT#USE : #/CMT# Accordion. #CMT#ADVANTAGE : #/CMT# The left keyboard of the accordion permits to interpret all kinds of music such as classical, jazz, popular or folk, and permits to practically execute the notes in interpretation mode. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows an octave of left keyboard of an accordion.