The material taken from the Roxy concerts was later amended with some overdubs in the studio, while the "Elsewhere" tracks ("Son of Orange County" and "More Trouble Every Day") were recorded on May 8, 1974, at the Edinboro State College, Edinboro, Pennsylvania (and parts of "Son of Orange County" on May 11, 1974, at the Auditorium Theatre in Chicago, Illinois [late show]) and do not contain overdubbed material.

The opening track, "Penguin in Bondage", is edited together from performances at the Roxy and the Chicago date with the guitar solo derived from the 12-8-73 sound check / film shoot.

On a side note, Zappa can be heard, on the released and unreleased Roxy tapes, speaking of the making of a 'film' that could potentially be "broadcast on television", as well as reminding the audience not to be "uncomfortable around the intimidatingly large 16 mm cameras."

[5] Collins and Thompson also used the drum fill from the chorus of "More Trouble Every Day" in the coda of live versions of the Genesis song "Afterglow."

On February 2, 2018, Zappa Records/UMe released The Roxy Performances, a definitive set that collects all four public shows from December 9–10, 1973, and the December 8th film shoot and soundcheck, each presented in their entirety without overdubs, along with bonus content featuring rarities from a rehearsal, unreleased tracks and highlights from the recording session at Bolic Sound.

[6] On June 17, 2022, Zappa Records/UMe released Zappa/Erie, a six CD box set including the complete May 8, 1974 concert from Edinboro that had been one of the sources of "Son of Orange County" and "More Trouble Every Day" from Roxy & Elsewhere.

The clip for "Montana" was included as a bonus feature of the Classic Albums: Apostrophe(')/Over-Nite Sensation DVD, which was released on May 1, 2007.