Year of Recording 1965.
121 Duets for Soprano and Alto -Theme an 112 Indian Lullaby - Alto Martha Bixler and Eric Leber 2:05. 101 Soprano Lesson 1 Martha Bixler and Eric Leber 1:46. 120 Duets for Soprano and Alto - Sleep, Baby, Sleep Martha Bixler and Eric Leber 1:08. 110 Alto Lesson 1 Martha Bixler and Eric Leber 0:44.