In order for the film crews to record the Beatles' rehearsals, the Beatles set up on a large soundstage at Twickenham studios. Because of the film crews, the Beatles had to work during the day—something they were not at all accustomed to. Tensions within the band were already evident and the conditions of the project only heightened them. Things got so bad that George quit the band less than two weeks into rehearsals. He returned a few days later under the condition that the band move to Apple studios and abandon the live concert. George also took it upon himself to bring in keyboardist Billy Preston, which proved to be a productive move. Because in the presence of an outsider, the Beatles were on their best behavior.

George Martin was only marginally involved in the Get Back project, so Glyn Johns did most of the production for the album. Paul had approached Glyn Johns, who was an independent "balance engineer" and a member of the filmmakers union. [1] After the recording was over, Glyn Johns produced an album of material and presented it to the Beatles in the Spring of 1969. Glyn Johns took the "warts and all" approach in assembling Get Back, but the results were not particularly good, although several years later Paul was quoted as saying that he loved Glyn Johns' Get Back mix. Johns tried a second time several months later with a somewhat altered playlist, but the Beatles rejected his efforts again. John Lennon then approached Phil Spector to assemble an album from the tapes of January, 1969. Phil Spector added orchestral and choir overdubs, much to Paul McCartney's displeasure.

Because of that, on November 18, 2003, a new version of Let It Be, called Let It Be... Naked was released. The liner notes for this release explain that "the Let It Be project retained an air of unfinished business." [2] Paul McCartney, long dissatisfied with Phil Spector's production of Let It Be, initiated the creation of a new version of the album, which features polished performances of all of the songs. Gone are the choral and string accompaniment. Also gone are is the jam tune "Dig It" and the impromptu performance of the Liverpool folk tune "Maggie Mae." Let It Be... Naked adds "Don't Let Me Down," which was the B side of the "Get Back single, released in the Spring of 1969.

The three versions of Get Back/Let It Be differ in the following ways:

The Glyn Johns Get Back mixes (never released)
	-		one performance from the rooftop concert ("One After 909")
	-		a "warts and all" approach with rehearsal versions of songs with a lot of studio chatter
Let It Be, Produced by Phil Spector
	-		three performances from the rooftop concert ("One After 909", "Dig a Pony" and "I've Got a Feeling")
	-		Studio performances with overdubs and orchestration
	-		one jam ("Dig It") and one impromptu oldie ("Maggie Mae") and a few instances of studio chatter
Let It Be... Naked
	-		Studio and rooftop performances without overdubs (for the most part) but the sound has been improved by using recent technology
	-		No studio chatter with the tracks, but a second "Fly on the Wall" disc included with studio conversations and rehearsal versions of several songs