He joined The Mothers early in 1966, shortly before they signed with Verve. Ingber's guitar can be heard on the albums Freak Out!, Lumpy Gravy, You Can't Do That On Stage Anymore Vol. 5, The Lost Episodes and Mystery Disc. Ingber also recorded on the Boy Wonder I Love You sessions. He can be seen in the Zappa movies Uncle Meat and Video From Hell. According to Jimmy Carl Black Ingber was fired after tripping on LSD on stage and not realizing that his amplifiers weren't working.
Elliot Ingber appeared in Frank Scheffer's documentaries Frank Zappa: The Present-Day Composer Refuses To Die (2000), Frank Zappa Phase II: The Big Note (2002) and Frank Zappa: Pioneer Of Future Music, parts 1 & 2 (2007).
Quotes about Elliot Ingber
From the "biographical trivia" section on the Freak Out! (1966) album:
"... Elliot digs the blues. He has a big dimple in his chin. We made him grow beard to cover it up. He just got out of the Army. Lucky for the Army."