The Beach Boys' unreleased and bootleg recordings

The current existence of most of the Beach Boys' tape masters was made possible by the fact that the band were in control of their own material. Typically, record labels at the time would possess the multi-tracks, then wipe them once a final master was mixed down.[3] However, a myriad of original multi-track masters have been lost due to various circumstances.[3] Some reported currently missing are:

• "Good Vibrations": The final multi-track. It is speculated to have been left behind at CBS Columbia Square shortly after the record was made.[3]
• Smile: A half-inch reel that may have also been left behind or destroyed at Capitol Records headquarters in 1968. This includes the multi-tracks to the songs "Wonderful,” “My Only Sunshine,” and "Cabinessence".[3]
• Various tracks recorded since the 1960s with little information known beyond their song titles.[4][5]

In the last few decades, reels of tape that were thought to be lost have been intermittently rediscovered.

• 1990 – CBS Columbia Square delivered a reel of 1965-era tapes sourced from the album Summer Days (and Summer Nights!!) which were thought to be lost.[3] When the studio closed, a major number of tapes were left behind. Ten years later, they were all destroyed without checking for inventory.[3]
• 2009 – Beach Boys biographer Jon Stebbins was contacted by a man living in central California who possessed a box of multi-track tapes deriving from the Shut Down Volume 2 album that had been lost for decades.[3]
• 2010 – Twenty-eight tapes that were stolen from the Beach Boys and Capitol archives in 1980 were retrieved; this included the original multi-track masters to "Do It Again", "We're Together Again", Adult Child, and a version of California Feeling.[3]
• 2010s – A piano demo of "Surf's Up" was found hidden within a reel of the Wild Honey track "Country Air". It was soon included on The Smile Sessions (2011).[6]
• 2013 – Acetates were unearthed that showed "I'm in Great Shape" as part of the projected "Heroes and Villains" single.[7][8] Before the release of Made in California (2013), a reel of tapes sourced from November 1964 live performances broadcast on BBC were retrieved.[3]
• 2014 – Writer Brian Chidester reported that additional Brian Wilson recordings dated from the late 1960s and early 1970s were recently found.[5]

In 2012, a new European Union copyright law was passed which extended the copyright of songs to 70 years, but only for recordings that were published within 50 years after they were made.[9] In order to prevent recordings made by 1960s artists from legally entering the public domain, many new rarities compilations were issued by record labels.[9] For the Beach Boys, this began with the digitally exclusive release The Big Beat 1963 (2013).[10][11]

Smile is an unfinished album that was abandoned in 1967. A large portion of the recordings were released on Good Vibrations: Thirty Years of the Beach Boys (1993) and The Smile Sessions (2011).[12]

Lei'd in Hawaii is a live album recorded in August and September 1967.[13] In 2017, the album was included in the compilation 1967 – Sunshine Tomorrow.

In 1975, Chicago and the Beach Boys performed together on a joint summer tour. These performances were recorded for a potential live album, but one never materialized.[12]

Adult/Child was the intended follow-up to The Beach Boys Love You (1977).[14]

Merry Christmas from the Beach Boys is the second Christmas album recorded by The Beach Boys and their third album planned for release in 1977. It was reportedly denied by Warner Bros. Records. Instead, the group released MIU Album in 1978 which was composed of songs from the same sessions.

Summer's Gone was the original title for the group's 2012 reunion album That's Why God Made the Radio, and an album-length suite was written in the theme. Only four of five tracks from the suite's closing half were included. The fifth was "I'd Go Anywhere" and would have fit between "Strange World" and "From There to Back Again". Both "I'd Go Anywhere" and the suite's opening half remain incomplete. Producer Joe Thomas has indicated a desire to finish the suite,[15] which had its origins in 1998 as cassette demos before Wilson began working on them again in 2008. A total of 28 songs were written and recorded for the album.[16] In 2013, it was announced that Wilson was working on finishing the thematic tracks (now dubbed "The Suite") for a new solo project.[17]

Alternate version of Sunflower, contained multiple tracks that would not be released for many years.

Landlocked was a working title for Surf's Up (1971)[18] and Carl and the Passions – "So Tough" (1972).[19] Many bootlegs later adopted the title.[2][20][21]

"Bedroom Tapes" is an umbrella term for much of the unreleased material that Brian Wilson recorded in the late 1960s to early 1970s. It was coined by music journalist Brian Chidester in a 2014 article for LA Weekly.[4][5]

In the mid-1970s, the Beach Boys recorded a wealth of unreleased material that had been intended for the album that became 15 Big Ones (1976).[12]

In the 1990s, Brian worked with multi-instrumentalist Andy Paley on an assortment of recordings destined for a potential album which could have featured some involvement with the Beach Boys.[22]

According to Charles Manson, the musician later convicted for several murders, he took part in "a pretty fair session, putting down about ten songs" at Brian's home studio.[23] Band manager Nick Grillo stated that there was approximately "a hundred hours" of Manson's music recorded at the studio. In 1971, Mike Love told Rolling Stone that the band still possessed "several 8-track tapes of Charlie and the girls that Dennis cut."[24] In Vincent Bugliosi's 1974 book Helter Skelter, he reported that Dennis claimed to have destroyed the tapes, because "the vibrations connected with them don't belong on this earth."[25]

While the group denied that tapes of these sessions exist – with co-productions by Carl and Brian (not Dennis as had often been stated) – engineer Stephen Desper concurred that they do, believing at the time that Manson's material was "pretty good... he had musical talent."[12] The recordings were not demos as is often believed, but complete studio productions of songs which may have later appeared as rerecordings on his album Lie: The Love and Terror Cult (1970).[12] Badman states that a runthrough of Manson's "Look at Your Game, Girl" was recorded on the same eight-track tape used for the 20/20 outtake "Well You Know I Knew".[26]

Music historian Andrew Doe has written that the chance of Manson's recordings seeing an official release have "not a hope in hell."[12] In 2009, photographer Ed Roach, a friend of Dennis's, posted online that he had "witnessed Dennis throw a 2" master tape in the ocean the year he died; (believe me, I tried to stop him!) I do understand that there is an additional tape still in the vault."[27] Asked about the existence of those tapes in 2021, Brother Records archive manager Alan Boyd declined to offer a comment.[28]

A World of Peace Must Come is an album by poet Stephen Kalinich that was produced by Brian Wilson in August and September 1969. It was officially released on October 6, 2008.[29]

In the early 1970s, Wilson rewrote and rerecorded some cuts from the Friends album.[30] Of the songs rerecorded, it was only the semi-instrumental "Passing By" that was eventually released on the compilation album Wake the World: The Friends Sessions in 2018, with notable differences being the addition of lyrics sung by Brian.[31]

Cows in the Pasture is an unfinished country and western album by band promoter Fred Vail that was produced by Brian Wilson in April 1970.[32]

Dennis's unfinished solo album from the early 1970s, co-produced with Daryl Dragon.[12]

Bambu is an unfinished Dennis Wilson solo album which would have followed his first, Pacific Ocean Blue (1977).[2]

"The Cocaine Sessions" (or "The Hamburger Sessions")[33] refer to a sporadic, collaborative recording session conducted between Brian and Dennis Wilson in November 1982 at musicologist Garby Leon's home studio. Recordings were made for songs entitled "Oh Yeah"', "Oh Lord", "City Blues", "You've Been", "I Feel So Fine", "Stevie", and "Heroes and Villains".[34]

"The Wilson Project" refers to sessions conducted between Brian and Gary Usher from June 1986 to July 1987 prior to the recording of Brian's first solo album. The name derives from Stephen McParland's book The Wilson Project, drawn from journals and tape diaries kept by Usher from the period.[12]

Sweet Insanity is an unofficial Brian Wilson solo album that would have followed his first.

In 1993, the bootleg label Vigotone released a 2 CD edition of Smile (VT-110 &111), including a "complete" version of the album as well as other outtakes.[35] 1998, the label Vigotone followed up with Heroes and Vibrations (VT-163), a forty-minute disc culling working tapes from "Good Vibrations" and "Heroes and Villains".[36]

Beginning in 1997, the Luxembourg-based[36] bootleg label Sea of Tunes (named after the Beach Boys' original publishing company) began releasing a series of CDs featuring high quality outtakes, session tracks and alternate recordings that spanned the group's entire career. Among these was a three-CD set featuring over three hours of sessions for "Good Vibrations", and several multi-CD sets containing a significant number of the tracking, overdubbing and mixing sessions for Smile.[37] Those involved with releasing these bootlegs were later apprehended by authorities, and it was reported that nearly 10,000 discs were seized.[38]

Provided by the AllMusic database[39] and Bret Wheadon.[37]