Canon Solfège by Ryoichi Ogasawara This can also be used as a solo monophonic solfège textbook. By using it with multiple people or by playing polyphony on an instrument, you can learn about canons and develop your musical sensitivity. There is a crease on the cover (see photo 4), but the contents are unused, so there are no problems with the contents. Price reduction requests are welcome! Please feel free to make an offer.