1. A History of 'Consonance' and 'Dissonance'
by James Tenney 
Price: USD 173.00
Dealer: Biblio, Better Read Than Dead
Description: New York: Excelsior Music Publishing Company, Date: 1988. Hardcover octavo (6-1/8 x 9 1/4 in). Blue cloth boards with gilt lettering to front and spine, decorative gilt to rear board. 117 pp. Very Good or better, trifle edge worn and with some dulling to spine lettering.. An exploration of sound theory and its practices, through the refracted dichotomy of consonance and dissonance, by the renowned Fluxus composer and music theorist. 1988. Excelsior Music Publishing Company ISBN 0935016996 9780935016994 [US] 

2. A History of 'Consonance' and 'Dissonance'
by James Tenney 
Price: USD 180.00
Dealer: Abebooks, Better Read Than Dead
Description: ISBN10: 0935016996, ISBN13: 9780935016994, [publisher: Excelsior Music Publishing Company, New York] Hardcover An exploration of sound theory and its practices, through the refracted dichotomy of consonance and dissonance, by the renowned Fluxus composer and music theorist. Very Good or better, trifle edge worn and with some dulling to spine lettering. Hardcover octavo (6-1/8 x 9 1/4 in). Blue cloth boards with gilt lettering to front and spine, decorative gilt to rear board. 117 pp [Brooklyn, NY, U.S.A.] [Publication Year: 1988]