<P> Preston is one of several people referred to as the `` Fifth Beatle '' . At one point during the Get Back sessions , John Lennon proposed the idea of having him join the band ( to which Paul McCartney countered that it was difficult enough reaching agreements with four ) . Preston played with the Beatles for several of the Get Back sessions , some of the material from which would later be culled to make the film Let it Be and its companion album , to which he contributed organ and electric piano . Preston also accompanied the band on electric piano for its rooftop concert , the group 's final public appearance . In April 1969 , their single `` Get Back '' was credited to `` The Beatles with Billy Preston '' , the only time such a joint credit had been given on an official Beatles - sanctioned release ( as distinct from an unsanctioned reissue of some Hamburg - era recordings on which they were the backing group for Tony Sheridan ) . The credit was bestowed by the Beatles to reflect the extent of Preston 's presence on the track ; his electric piano is prominent throughout and he plays an extended solo . Preston also worked , in a more limited role , on the Abbey Road album , contributing organ to the tracks `` I Want You ( She 's So Heavy ) '' and `` Something '' . </P>
who became the fifth beatle on let it be playing keyboards on the lp
Billy Preston