| 摘要 |
PURPOSE:To enable speedy transposition matching the actual adjustment of the musical instrument and to facilitate operation by transposing a key to 5th keys upward and downward by a 1st and a 2nd transposing means when adjusting the musical instrument. CONSTITUTION:A reference key storage means stores tonality which a normal performance is given through the basic operation of a performance means as a reference key. Further, the musical instrument is provided with the 1st transposing means 5a and 5b which transposes said tonality of the performance of the basic operation of the performance means to every 5th upper key by an octave shift within a half-octave range from the reference key and the 2nd transposing means 5a and 5c which transposes the tonality to every 5th lower key by an octave shift within a half-octave range from the reference key. Consequently, the transposition matching the actual tonality of the musical instrument is enabled and the performance is facilitated by speedy transposition while given. |
