Michael Andre Lewis (? - passed away on January 31, 2012, in Shreveport, Louisiana) was one of the first musicians using multiple signal processors on keyboards. He was a pioneer in the use of synthesizers on records and worked with Roger Lynn on developing the first digital drum machines (he was a testor for Roland products). Lewis was hired by Zappa to replace George Duke.
Andre got to audition via Marty Perellis, who got his name and number from a music store in LA (though his professional relationship with Johnny "Guitar" Watson might have helped him 'win' the audition). His first gig with FZ was the Royce Hall concert. Andre Lewis provided organ/keyboards, and/or vocal for Zoot Allures, Studio Tan, Sheik Yerbouti, Orchestral Favorites, Tinsel Town Rebellion, Shut Up 'N Play Yer Guitar, You Can't Do That On Stage Anymore Vol. 3, You Can't Do That On Stage Anymore Vol. 6, Läther, Frank Zappa Plays The Music Of Frank Zappa, FZ:OZ, and Quaudiophiliac.