Led Zeppelin released Coda in the United States on November 19, 1982, through Swan Song. The eight-track collection drew on recordings made between 1970 and 1978, reaching back across the band’s career after John Bonham’s 1980 death had brought it to an end. Jimmy Page assembled the album from material that had remained outside Zeppelin’s original releases.
There was a contractual reason to return to those tapes, but doing the work meant confronting the loss of his bandmate. “It was only two years since John died,” Page told Classic Rock in 2015. He recalled how close that loss still felt while he was preparing Coda. Page had to build the record from performances Bonham had already left on tape. “Bonzo’s Montreux” gave him a place to begin. Recorded with Bonham at Mountain Studios in Switzerland in 1976, the instrumental allowed the drums to carry the piece. In his account of the sessions, Page described using an Eventide Harmonizer to produce a sound resembling steel drums. He returned to the tape at his studio, the Sol, and added a harmonizer keyboard overdub at the ending for Coda.
The original sleeve credited “We’re Gonna Groove” to a 1969 studio session, but the performance came from Led Zeppelin’s January 1970 show at London’s Royal Albert Hall. Page wanted it to sound like a studio track, so he added guitar layers with an EMS Synthi Hi-Fli processor, using its sub-octave effect on the chorus. “I Can’t Quit You Baby” came from the same concert, although the sleeve described it as a rehearsal. Both tracks were edited for the album, with audience noise removed.
The collection also reached into the sessions for Led Zeppelin III through “Poor Tom,” then forward to the band’s 1978 sessions in Stockholm. “Ozone Baby,” “Darlene” and “Wearing And Tearing” had been recorded at Polar Studios in November 1978 during work on In Through the Out Door. All three appeared on Coda’s second side alongside Bonham’s instrumental. That sequence placed recordings from the band’s last studio album sessions around a separate experiment that Page and Bonham had made two years earlier.
Page revisited that approach when Coda was expanded in July 2015. The deluxe edition added two companion discs containing 15 tracks, making it the only release in that reissue series with two discs of supplementary audio. In a 2015 interview published by Ultimate Classic Rock, Page explained that he had planned that larger ending from the beginning of the project. The extra space reached beyond the original album’s selections: “Sugar Mama” came from the 1968 debut sessions, while the instrumental “St. Tristan’s Sword” dated to the Led Zeppelin III sessions in 1970. Page later explained to Classic Rock that the latter could have developed into a finished song, but the band had left it as a jam.
The expanded edition also let listeners hear stages of the work behind Coda itself. It included an alternate mix of “We’re Gonna Groove” and a version of “Bonzo’s Montreux” identified as a mix construction in progress.
