While working in Studio Z and continuing to play guitar in local bands, Zappa was befriended by the singer Don Van Vliet, who eventually morphed into Captain Beefheart. Zappa and Van Vliet recorded songs such as "Metal Man Has Won His Wings," "Cheryl's Canon" and a cover of Little Richard's "Slippin' and Slidin'" under the name the Soots. Zappa took the tracks to Dot Records' Milt Rogers, who flatly stated, "We can't release these - the guitar is distorted."

Though the Soots didn't make it into the mainstream, Zappa and Beefheart stayed in touch and when Beefheart had the opportunity to record Trout Mask Replica in 1969, he turned to Zappa.

The original idea behind recording the album, Zappa admits in his autobiography (The Real Frank Zappa Book) was to do it as "an anthropological field recording" in Beefheart's house in the San Fernando Valley of California. Along with engineer Dick Kunc, a Shure 8-channel mixer mounted in briefcase and a Uher portable tape recorder they set to record Captain Beefheart and His Magic Band's seminal release. They got a couple songs into the sessions at the house when Van Vliet changed his mind on the sessions and wanted to move it to a proper studio in Glendale.

Of course, before, during and after his outside production work Zappa was consumed with his own band, the Mothers of Invention. From their debut, Freak Out! (produced by Tom Wilson) to his final solo releases, Zappa kept an active role in all parts of the recording process. What's interesting to note is that Zappa was an artist/producer who had the ability and talent to move from old school recording dates where compressors and equalizers were stunning technological advances to his use of the Synclavier to compose orchestral works in the later days of his career.

Producer/engineer Joe Chiccarelli credits Zappa with changing his thinking about recording. "I went from the standard hi-fi model of getting everything to sound good, to pushing the limits in search of the unique. Good sound quality wasn't enough for Zappa. He wanted his recordings to have character, to jump up and surprise you. He always had a vision of the way he wanted things, and he would go to any lengths musically, lyrically or with recording techniques to achieve that vision. Zappa opened my eyes and twisted me."

Chiccarelli learned to experiment on such Zappa discs as Baby Snakes, Joe's Garage, Live In New York, and Shut Up and Play Yer Guitar. From his experimentation within the studio and the live setting it seems clear that Zappa was comfortable with technology and used it to his creative advantage whenever possible. In fact, without much of a fanfare, Zappa's work with the London Symphony Orchestra was an engineering feat. From altering microphone assignments to designing virtual isolation booths in the orchestra to using a Lexicon 224-X digital reverb processor during the mixing process, Zappa took what was destined to be a recording disaster and made it a masterpiece.