The Beatles album was supplemented by the four tracks already released on their first two singles. Martin originally considered recording the Beatles' debut LP live at The Cavern Club, but after deciding that the building's acoustics were inadequate, he elected to simulate a "live" album with minimal production in "a single marathon session at Abbey Road". After the moderate success of "Love Me Do", the single "Please Please Me" met with a more emphatic reception. Released in January 1963, two months ahead of the album of the same name, the song reached number one on every UK chart except "Record Retailer", where
The Beatles bootleg recordings shows, studio outtakes and session tapes, alternate mixes, test discs, and home demos. The largest single source of Beatles bootleg material is the set of Nagra audio tapes from the 1969 filming of the "Get Back" / "Let It Be" rehearsal and recording sessions. The 1970s saw the first Beatle bootlegs issued on vinyl records. The first Beatles bootleg was "Kum Back", issued around January 1970 in a plain white sleeve with plain white labels and no mention of a record company. This vinyl bootleg was based on an acetate of one of the early rough mixes by Glyn Johns