Acknowledged mainly for his work with Frank Zappa and the Mothers of Invention, Ian Robertson Underwood has spent most of his adult life working behind the scenes, first as a session man and then as a keyboard synthesizer programmer specializing in mainstream film soundtracks. Born in New York City on May 22, 1939, Underwood played in a dance band in high school with bassist Steve Swallow. His earliest known recordings were made during a benefit concert for the Lenox Jazz School in Massachusetts on August 29, 1959. On that auspicious occasion he played flute and saxophone with...