Harrison recorded the album between November 1967 and February 1968, with sessions taking place in London and Bombay. One of his collaborators on the project was classical pianist and orchestral arranger John Barham, while other contributors include Indian classical musicians Aashish Khan, Shivkumar Sharma, Shankar Ghosh and Mahapurush Misra. The Western music features contributions from Tony Ashton and the latter's band, the Remo Four, as well as guest appearances by Eric Clapton and Ringo Starr. Harrison recorded many other pieces that appeared in "Wonderwall" but not on the soundtrack album, and the Beatles' 1968 B-side "The Inner Light" also originated from his time in Bombay. Although the "Wonderwall" project marked the end of Harrison's direct involvement with Indian music as a musician and songwriter, it inspired his later collaborations with Ravi Shankar, including the 1974 Music Festival from India.