The Beatles song with three guitarists, three bassists, McCartney on drums
Although they reshaped music as we know it, the Beatles never shied away from their influences. Their earliest albums included covers of songs by some of their favorite American artists, including Buddy Holly, Little Richard, Carl Perkins and groups from the Motown stable.
Those influences were rooted deep in their music sensibilities. George Harrison’s eye-catching Futurama guitar was bought so he could mimic his hero Holly at a time when Fender Stratocasters hadn’t yet made it to the U.K. Paul McCartney often doffed his hat to his forebearers, whether by channeling Little Richard's singing style or drawing Motown stylings into “Got to Get You into My Life.”
But perhaps the most obvious tribute to a fellow group was "Back in the U.S.S.R.," a McCartney composition from the 1968 White Album that was recorded with all the trimmings of a classic Beach Boys tune. And indeed, the Beatles were Beach Boys fans. John Lennon and McCartney were both heavily influenced by Brian Wilson's songs, arrangements and recordings on Pet Sounds, and they considered the group's multilayered harmonies as good as their own.
So how did "Back in the U.S.S.R." become a Beach Boys tribute? It got some help from a Beach Boy: Mike Love.
The Beatles met Love in February 1968, when they all went to study Transcendental Meditation in Rishikesh, India, with guru Maharishi Mahesh Yogi. Lennon, McCartney and Harrison wrote a huge portion of the White Album while there, including "Back in the U.S.S.R."
Source: yahoo.com/Phil Weller
