Question: What was the release date of an all-star collaborative album that included the work of the only three-time inductee to the Rock and Roll Hall of Fame?

The Midnighters were an American R&B group from Detroit, Michigan.  They were an influential group in the 1950s and early 1960s, with many R&B hit records.  They were also notable for launching the career of lead singer Hank Ballard and the worldwide dance craze the Twist.  Between 1953 and 1962 the Midnighters had almost two dozen hits on the U.S. Pop & R&B charts.  Their big hits included the million-selling Billboard Top 10 pop hits "Finger Popping Time" (for which they received a 1961 Grammy Award nomination), and "Let's Go, Let's Go, Let's Go".  The Midnighters also had 13 Top 10 R&B hits, including three that reached number 1.  Their Top 10 R&B hits included "Work with Me, Annie", "It's Love Baby (24 Hours a Day)", "Annie Had a Baby", "The Hoochi Coochi Coo", "Teardrops on Your Letter", "Get It", "The Float" and "Nothing but Good".  They received the Rhythm and Blues Foundation's prestigious Pioneer Award in 1992 and were inducted into the Vocal Group Hall of Fame in 1999.  The group's lead singer, Hank Ballard, was inducted into the Rock and Roll Hall of Fame in 1990.  The Midnighters as a "group" were inducted into the Rock and Roll Hall of Fame on April 14, 2012. <SEP> Eric Patrick Clapton, {'1': ", '2': ", '3': ", '4': "} (born 30 March 1945), is an English rock and blues guitarist, singer, and songwriter.  Clapton has been referred to as one of the most important and influential guitarists of all time.  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 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. <SEP> Rock & Roll Hall of Fame Covers EP is EP compilation by American rock band Red Hot Chili Peppers, released in 2012 through iTunes as a digital-only download.  The band first announced the EP through their website on April 19, 2012 with the title "We Salute You", although it was changed on the date of the release.  The EP consists of six cover songs, live and in the studio, of previous Rock and Roll Hall of Fame inductees all who influenced the band.  The EP was released to commemorate the band's own induction into the Rock and Roll Hall of Fame in 2012.  All six songs have been previously featured on other releases by the band.  Four of the six tracks had never been released digitally before. <SEP> Doris Troy is an album released in 1970 on the Beatles' Apple Records label by American soul singer Doris Troy.  It features songs written by Troy and a number of the participants on the sessions, including George Harrison, Stephen Stills, Klaus Voormann and Ringo Starr.  Through the extended period of recording, the album became an all-star collaborative effort, typical of many Apple projects during 1968–70, although it was Troy's only album on the Beatles' label.  Other guest musicians included Billy Preston, Peter Frampton, Leon Russell, Eric Clapton and members of the Delaney & Bonnie Friends band.  Like the Harrison-produced single "Ain't That Cute", "Doris Troy" failed to chart in Britain or America on release.