Beatles amid the business problems surrounding their Apple organisation. Harrison's musical activities outside the band during 1969 inspired other songs on the album: "What Is Life" came to him while driving to a London session that spring for Preston's That's the Way God Planned It album; "Behind That Locked Door" was Harrison's message of encouragement to Dylan, written the night before the latter's comeback performance at the Isle of Wight Festival; and Harrison began "My Sweet Lord" as an exercise in writing a gospel song during Delaney & Bonnie's stopover in Copenhagen in December 1969. "I Dig Love" resulted from Harrison's early experiments with slide guitar, a technique to which Bramlett had introduced him, in order to cover for guitarist Dave Mason's departure from the Friends line-up. Other songs on All Things Must Pass, all written during the first half of 1970, include "Awaiting on You All", which reflected Harrison's adoption of chanting through his involvement with the Hare Krishna movement; "Ballad of Sir Frankie Crisp (Let It Roll)", a tribute to the original owner of Friar Park; and "Beware of Darkness". The latter was another song influenced by Harrison's association with the Radha Krishna Temple, and was written while some of the devotees were staying with him at Friar Park. On 1 May 1970, shortly before beginning work on All Things Must Pass, Harrison attended a Dylan session in New York, during which he acquired a new song of Dylan's, "If Not for You". Harrison wrote "Apple Scruffs", which was one of a number of Dylan-influenced songs on the album, towards the end of production on All Things Must Pass, as a tribute to the diehard fans who had kept a vigil outside the studios where he was working. According to Leng, All Things Must Pass represents the completion of Harrison's "musical-philosophical circle", in which his 1966–68 immersion in Indian music found a Western equivalent in gospel music. While identifying hard rock, country and Motown among the other genres on the album, Leng writes of the "plethora of new sounds and influences" that Harrison had absorbed through 1969 and now incorporated, including "Krishna chants, gospel ecstasy, Southern blues-rock [and] slide guitar". The melodies of "Isn't It a Pity" and "Beware of Darkness" have aspects of Indian classical music, and on "My Sweet Lord", Harrison combined the Hindu bhajan tradition with gospel. Rob Mitchum of Pitchfork describes the album as