The recording sessions took place in London over a four-week period beginning in October 1965. For the first time in their career, the band were able to record an album free of concert, radio or film commitments. Often referred to as a folk rock album, particularly in its Capitol configuration, "Rubber Soul" incorporates a mix of pop, soul and folk musical styles. The title derives from the colloquialism "plastic soul" and was the Beatles' way of acknowledging their lack of authenticity compared to the African-American soul artists they admired. After "A Hard Day's Night" in 1964, it was the second Beatles LP to contain only original material.