The master take was recorded on 31 January 1969, as part of the "Apple studio performance '' for the project. McCartney played Blüthner piano, Lennon played six - string electric bass (replaced by McCartney 's own bass part on the final version at the behest of George Martin), George Harrison and Ringo Starr assumed their conventional roles, on guitar and drums respectively, and Billy Preston contributed on organ. This was one of two performances of "Let It Be '' that day. The first version, designated take 27 - A, would serve as the basis for all officially released versions of the song. The other version, take 27 - B, was performed as part of the "live studio performance '', along with "Two of Us '' and "The Long and Winding Road ''. This performance, in which Lennon and Harrison harmonised with McCartney 's lead vocal and Harrison contributed a subdued guitar solo, can be seen in the film Let It Be.
who plays the guitar solo in let it be
George Harrison