Question: A Sideman's Journey is the first solo album by German musician and artist Klaus Voormann, released in July 2009, he played bass on a large number of well-known albums by ex-Beatles, including which triple album, by English musician George Harrison?

"What Is Life" is a song by the English musician George Harrison, released on his 1970 triple album "All Things Must Pass".  In many countries, it was issued as the second single from the album, in February 1971, becoming a top-ten hit in the United States, Canada and elsewhere, and topping singles charts in Australia and Switzerland.  In the United Kingdom, "What Is Life" appeared as the B-side to "My Sweet Lord", which was the best-selling single there of 1971.  Harrison's backing musicians on the song include Eric Clapton and the entire Delaney & Bonnie Friends band, with whom he had toured during the final months of the Beatles.  Harrison co-produced the recording with Phil Spector, whose Wall of Sound production also employed a prominent string arrangement by John Barham and multiple acoustic rhythm guitars, played by Harrison's fellow Apple Records signings Badfinger. <SEP> Footprint is the second solo album by American musician Gary Wright, released in 1971 on A&M Records.  It contains "Stand for Our Rights", an anthem-like song calling for social unity that was issued as a single in advance of the album.  Wright recorded the majority of "Footprint" in London with a large cast of musicians – including George Harrison, Hugh McCracken, Alan White, Klaus Voormann, Jim Gordon, Jim Keltner and Bobby Keys – many of whom, like Wright, had played on Harrison's "All Things Must Pass" triple album in 1970.  Harrison's contributions included an uncredited role as producer, and serve as an example of his support for Wright during the early stages of the latter's solo career.  The ballad "Love to Survive" is one of three tracks that feature an orchestral arrangement by John Barham. <SEP>  He played bass on a large number of well-known albums by ex-Beatles John Lennon, George Harrison and Ringo Starr − including "All Things Must Pass", "Imagine" and "The Concert for Bangladesh" − and by artists such as Harry Nilsson, Doris Troy, Lou Reed, Gary Wright, Carly Simon and Randy Newman. A Sideman's Journey is the first solo album by German musician and artist Klaus Voormann, released in July 2009.  Voormann is best known as the creator of the cover art for The Beatles' album "Revolver" as well as for being a much-in-demand session musician during the 1970s.  Before then, Voormann had been a member of the 1960s pop group Manfred Mann.  "A Sideman's Journey" is notable for including performances by Paul McCartney, Ringo Starr and Yusuf Islam (Cat Stevens), among others. <SEP>  Recorded and released in 1970, the album was Harrison's first solo work since the break-up of the Beatles in April that year, and his third solo album overall.  It includes the hit singles "My Sweet Lord" and "What Is Life", as well as songs such as "Isn't It a Pity" and the title track that had been turned down for inclusion on releases by the Beatles. All Things Must Pass is a triple album by English musician George Harrison.  The album reflects the influence of Harrison's musical activities with artists such as Bob Dylan, the Band, Delaney & Bonnie and Billy Preston during 1968–70, and his growth as an artist beyond his supporting role to former bandmates John Lennon and Paul McCartney.  "All Things Must Pass" introduced Harrison's signature sound, the slide guitar, and the spiritual themes that would be present throughout his subsequent solo work.  The original vinyl release consisted of two LPs of songs and a third disc of informal jams, titled "Apple Jam".  Several commentators interpret Barry Feinstein's album cover photo, showing Harrison surrounded by four garden gnomes, as a statement on his independence from the Beatles.