Melody controlling apparatus for music accompaniment playing system the music accompaniment playing system and melody controlling method for controlling and changing the tonality of the melody using the MIDI standard

摘要

A melody controlling apparatus is provided with: a reproducing device for reproducing first digital sound source controlling information and melody controlling information related to the first digital sound source controlling information; a memory for storing melody changing information; a melody changing device for reading the melody changing information from the memory according to the melody controlling information reproduced by the reproducing device, and changing the first digital sound source controlling information on the basis of the melody changing information to generate second digital sound source controlling information; and a digital sound source for generating music information signal from the second digital sound source controlling information.