The complete historical Rainbow Theatre concert was newly mixed by legendary producer/engineer Eddie Kramer (his first Zappa Trust project to date) and mastered by Bernie Grundman. Studios and mastered by John Polito at Audio Mechanics.

The majority of the box set’s unedited live tracks have been newly mixed from scratch by longtime Zappa Trust associate Craig Parker Adams at Winslow Ct. The Mothers 1971 will also be available digitally for streaming and download, in both standard and hi-res audio (96kHz/24-bit). This release is significant for marking the first time the complete back-to-back double-header Fillmore East concerts have been released in their entirety, allowing fans to hear the full performances that Zappa edited the album from, and for the very first time anywhere, contains the official audio of the Rainbow Theatre show’s truly shocking ending which was thought to have not been recorded until recently discovered while putting this project together. The extensive collection is rounded out with the original rare single for “Tears Began To Fall” and its non-album-track B-side “Junier Mintz Boogie,” signifying the single’s first re-release in 50 years and digital debut, as well as a homemade radio spot and its related outtakes. Also included is an unreleased hybrid concert culled from June 1 and Jperformances in Scranton and Harrisburg, PA, which denote the first time Mothers shows were recorded on Zappa’s preferred, then-newly purchased half-inch four-track tape machine (throughout the ’70s, this was the main tape recorder used to document shows if the budget allowed). Overseen by the Zappa Trust and produced by Ahmet Zappa and Zappa Vaultmeister Joe Travers, the 100-track, nearly 10-hour set brings together every note of the fabled four shows that closed down the vaunted Fillmore East in New York City on June 5-6, 1971, including the entire John Lennon and Yoko Ono encore, along with the full Rainbow Theatre performance in London, England, on December 10, 1971. The set showcases the special 1971 lineups and commemorates their New York City Fillmore East and London Rainbow Theatre gigs, in celebration of their 50th anniversaries. The Zappa Estate has detailed The Mothers 1971, a monumental and definitive new super deluxe edition eight CD and digital collection from Frank Zappa and The Mothers due March 18th via Zappa Records/UMe. 1971 Fillmore East run in NYC and final Rainbow Theatre Gig in London compiled into set for 50th anniversary

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