Question: Backing musicians on the song "What Is Life" include an English singer who is the only three time inductee to what?
Context: "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. "Hand in Glove" is a song by the British alternative rock band The Smiths, written by singer Morrissey and guitarist Johnny Marr.  It was released as the band's first single in May 1983 on independent record label Rough Trade Records.  "Hand in Glove" peaked at number three on the UK Indie Chart.  It did not chart (top 75) but made number 124 outside the UK singles chart.  A remixed version of the song was featured on the band's debut album, "The Smiths", in 1984.  That same year, a cover version recorded by singer Sandie Shaw featuring Smiths members Marr, Andy Rourke and Mike Joyce as backing musicians reached number 27 on the UK Singles Chart. Rainbow (also known as Ritchie Blackmore's Rainbow or Blackmore's Rainbow) are a British rock band led by guitarist Ritchie Blackmore, active from 1975 to 1984, from 1993 to 1997, and from 2015 to the present.  They were originally established with Ronnie James Dio's American rock band Elf, but after their first album, Blackmore fired the backing members and continued with Dio until 1979.  Three British musicians joined in 1979, singer Graham Bonnet, keyboardist Don Airey, former Deep Purple bassist Roger Glover, and this line-up gave the band their commercial breakthrough with the single "Since You Been Gone".  Over the years Rainbow went through many line-up changes with no two studio albums featuring the same line-up.  Other lead singers Joe Lynn Turner and Doogie White would follow, and the project consisted of numerous backing musicians.  A pioneer to power metal, the band's early work primarily featured mystical lyrics with a neoclassical metal style, but went in a more streamlined, commercial direction following Dio's departure from the group. The Stone Poneys were a folk-rock trio formed in Los Angeles, consisting of Linda Ronstadt on vocals, Bobby Kimmel on rhythm guitar and vocals, and Kenny Edwards on lead guitar.  Their recordings include Ronstadt's first hit song, a cover of Mike Nesmith's "Different Drum".  Even at this early stage, Ronstadt was already showcasing her performances of an eclectic mix of songs, often from under-appreciated songwriters, requiring a wide array of backing musicians. Captain Hollywood Project is a famous ‘90s Eurodance music project and live touring act best known for the ground breaking crossover world hits “More and More," "Only with You" and "Flying High."  At the peak of its success in the '90s, the project itself achieved 10 Top-20 hits on European music charts.  The project was first formed in 1990 in Nuremberg, Germany by rapper/singer, dancer and music producer Tony Dawson-Harrison (aka Captain Hollywood).  When first naming the project, Harrison chose the name "Captain Hollywood Project" in order to distinguish his new music for the project from his previous music.  He also chose the name to give himself the creative freedom as executive producer to involve any singer, songwriter or producer of his choice when producing each of the new songs for the project.  Even though the act has been widely viewed as a one-man act starring Harrison as the rapper/frontman; a talented ensemble of female backup singers, dancers and backing musicians have traditionally been included in the act by Harrison.  Today, the Captain Hollywood Project is recognized as a live performing duo act starring Harrison and singer/dancer Shirin von Gehlen (aka Shirin Amour) as the project's new lead singer.  Together with their band of live musicians and dancers, Harrison and von Gehlen perform the Captain Hollywood Project hits year-round at concert venues in the United States, Canada, South America, Europe, Russia and Australia. Eric Patrick Clapton, {'1': ", '2': ", '3': ", '4': "} (born 30 March 1945), is an English rock and blues guitarist, singer, and songwriter.  He is the only three-time inductee to the Rock and Roll Hall of Fame: once as a solo artist and separately as a member of the Yardbirds and Cream.  Clapton has been referred to as one of the most important and influential guitarists of all time.  Clapton ranked second in "Rolling Stone" magazine's list of the "100 Greatest Guitarists of All Time" and fourth in Gibson's "Top 50 Guitarists of All Time".  He was also named number five in "Time" magazine's list of "The 10 Best Electric Guitar Players" in 2009. Peter Dean Gordeno (born 20 February 1964 in Kensington, London) is a British songwriter and producer who in his time has also been a live and session musician, and has, since 1998, toured with Depeche Mode.  He performs keyboard parts in lieu of departed Alan Wilder, as well as occasional backing vocals and bass guitar.  He and Andrew Phillpott went as backing musicians along with Martin Gore on a brief tour called "A Night with Martin L. Gore" in 2003.  His father was the choreographer and dancer Peter Gordeno.  His mother is Angela Wallace.  He also has a brother and a sister. The I'm with You World Tour was a worldwide concert tour by American rock band, the Red Hot Chili Peppers in support of the band's tenth studio album, "I'm with You".  It marked the band's first tour in four years and first with guitarist Josh Klinghoffer, who replaced John Frusciante in 2009.  The band was also joined for the first time by backing musicians Mauro Refosco (percussion) and Chris Warren (keyboards).  The first North American leg of the tour was briefly postponed due to a leg injury suffered by singer Anthony Kiedis which required surgery.  Klinghoffer also broke his foot during the tour; however, no dates were cancelled due to his injury.  During the tour the band saw a few milestones come and go such as their own 30th anniversary since forming in 1983 and the 10th, 20th and 25th anniversaries of their albums, "By the Way", "Blood Sugar Sex Magik" and "The Uplift Mofo Party Plan".  Despite these milestones, the band made little to no mention of them and no special performances were given on their behalf.  The band was also named 2012 inductees to the Rock and Roll Hall of Fame while on tour. Area Code 615 was the name of a Nashville country rock band active in the late 1960s and early 1970s, taking their name from the telephone area code, which at the time covered all of Central and Eastern Tennessee.  The band was made up of session musicians, recording only two albums before resuming normal session work.  Several of the members were backing musicians for Bob Dylan's "Blonde on Blonde" and "Nashville Skyline" albums and on recordings by Billy Swan. Friends and Legends was the second solo album from Michael Stanley.  The album title refers to the backing musicians accompanying Stanley on the album, which was recorded at Applewood Studios in Golden, Colorado.  The basic band on all tracks was Barnstorm, composed of Joe Walsh on lead guitar and synthesizer, Joe Vitale on drums, flute, synthesizer and backing vocals, and Kenny Passarelli on bass.  In addition, three members of Stephen Stills' Manassas performed: Paul Harris on keyboards, Joe Lala on percussion and Al Perkins on pedal steel guitar, and the band also included saxophonist David Sanborn.  Among the backing vocalists were Richie Furay and Dan Fogelberg.  In keeping with the collaborative spirit, J. Geils assisted with production of the saxophone tracks.
Answer: Rock and Roll Hall of Fame