John Cage String Quartet / George Crumb Black Angels TV-S 34610 *VG+* 1976.

George Crumb - Black Angels (Images I) For Electric String Quartet (Thirteen Images From The Dark Land) (1970) 22:47

A/1 George Crumb– Departure

A/2 George Crumb– Absence

A/3 George Crumb– Return

John Cage - String Quartet In Four Parts (1950) 21:42

B/1 John Cage– Quiety Flowing Along

B/2 John Cage– Slowly Rocking

B/3 John Cage– Nearly Stationary

B/4 John Cage– Quodlibit