During a trip to London in December 1967, Tork contributed banjo to George Harrison's soundtrack to the 1968 film Wonderwall. His playing featured in the movie, but not on the official Wonderwall Music soundtrack album released in November 1968.[14] Tork's brief five-string banjo piece can be heard 16 minutes into the film, as Professor Collins is caught by his mother while spying on his neighbour Penny Lane.