Harrison recorded the instrumental track for "The Inner Light" in Bombay in January 1968, during the sessions for his "Wonderwall Music" soundtrack album. It is the only Beatles studio recording to be made outside Europe and introduced Indian instruments such as sarod, shehnai and pakhavaj to the band's sound. The musicians on the track include Aashish Khan, Hanuman Jadev and Hariprasad Chaurasia. Aside from Harrison's lead vocal, recorded in London, the Beatles' only contribution came in the form of group backing vocals over the song's final line. In the decade following its release, the song became a comparative rarity among the band's recordings; it has subsequently appeared on compilation albums such as "Rarities", "Past Masters, Volume Two" and "Mono Masters".