Cage, John. <br/><br/>
Music of changes.  Parts III and IV  [sound recording]. 

 - New York :  New World Records,  1978. 
<br/><br/>Notes by Ben Johnson, 2 p. illus. including selected bibliography and discography, inside sleeve. Program notes on rear sleeve. 
<br/><br/>David Tudor, piano. 
<br/><br/><label>Publisher. No.: </label>NW 214 New World Records  NW 214 New World Records 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Piano music.