Question: Who became the CEO of the record label that the singer of Somebody to Love belongs to?

full_context: Document 1: The Best of Grace Slick: The Best of Grace Slick is a compilation album of Grace Slick's work, focusing mostly on work with Jefferson Airplane, Jefferson Starship and Starship. There are three tracks from her solo albums, although none appear from "Dreams" (1980).
Document 2: Sony Music: Sony Music Entertainment Inc. (sometimes known as Sony Music or by the initials, SME) is an American music corporation managed and operated by Sony Corporation of America (SCA), a subsidiary of Japanese conglomerate Sony Corporation. In 1929, the enterprise was first founded as American Record Corporation (ARC) and, in 1938, was renamed Columbia Recording Corporation, following ARC's acquisition by CBS. In 1966, the company was reorganized to become CBS Records. In 1987, Sony Corporation of Japan bought the company, and in 1991, renamed it SME. It is the world's second largest recorded music company, after Universal Music Group.
Document 3: I Dig Love: Leng draws parallels between "I Dig Love" and the Beatles' more free-form compositions of the late 1960s. Among these, Paul McCartney's "Why Don't We Do It in the Road?" exemplifies what Ian MacDonald termed in the 1990s the "long-gone let-it-all-hang-out era". In his book "Working Class Mystic", Gary Tillery identifies "I Dig Love" as one of two "All Things Must Pass" tracks (the other being "Wah-Wah") that could have been sung by John Lennon, whose style increasingly embraced provocative artistic statements following the start of his relationship with Yoko Ono in 1968. Leng also compares "I Dig Love" with "Love the One You're With", a "hymn to hedonism" by Stephen Stills, with whom Harrison worked on Doris Troy's eponymous album for Apple Records, in 1969–70.
Document 4: Software (album): Software is Grace Slick's 1984 album released by RCA Records. This album was recorded after she had re-joined Jefferson Starship. After working on this album, Peter Wolf would go on to contribute to Jefferson Starship's 1984 album, "Nuclear Furniture". A music video was made for the single "All the Machines". "Software" is Grace Slick's fourth and final solo album.
Document 5: Slick Aguilar: Mark "Slick" Aguilar (born 1954) is an American guitarist. He has worked with a number of notable musicians but is probably best known as a member of Jefferson Starship. From 1974-1980 he was an in house guitar player for TK studios in N. Miami. He recorded with KC & the Sunshine Band, Bobby Caldwell, Latimore, George & Gwen McRae, Clarence Reid, Timmy Thomas and Betty Wright. He played guitar with KC & the Sunshine Band and Wayne Cochran during the late 1970s before moving to the West Coast. It was there that he recorded with, Buddy Miles' band and in 1982-84 he toured with David Crosby. In 1984 Slick joined Marty Balin's band which led to him being hired to play lead guitar in the KBC Band. When Paul Kantner reformed Jefferson Starship in 1992 he hired Slick as the band's lead guitarist. He also sometimes performs with Marty Balin as a duo. credits: David Crosby Band (82-84) C. Santana, Randy California, Rick Derringer, Stephen Stills, Edgar Winter, Ray Manzarek, Tony Williams, Todd Rundgren, Gregg Allman, Timmy B. Schmidt, Wayne Cochran & CC Riders, K.C. & the Sunshine Band, Al Kooper, Jose Feliciano, Jerry Jeff Walker, Merle Saunders, Neil Young, Butch Trucks, Big Brother and the Holding Co.(Sam Andrews,Dave Getz, Peter Albin), Papa John Creach, Amos Garrett, Fred Neil, Vince Martin.
Document 6: Somebody to Love (Jefferson Airplane song): ``Somebody to Love '', originally titled`` Someone to Love'', is a rock song that was written by Darby Slick. It was originally recorded by The Great Society, and later by Jefferson Airplane. Rolling Stone magazine ranked Jefferson Airplane's version No. 274 on their list of the 500 Greatest Songs of All Time.
Document 7: Lady of the Island: "Lady of the Island" is a folk song written by Graham Nash in the late 1960s. The song appears on Crosby, Stills & Nash's critically acclaimed, self-titled debut album. The song is notable for taking its inspiration from fellow folk musician Joni Mitchell, with whom Nash was romantically involved at the time. Although the album contains another love song to Mitchell, David Crosby's "Guinnevere", Nash told "Mojo" magazine in April 2009 that this potentially tricky situation did not create any problems. He explained: "The way that we went about our lives did not entail jealousy and it didn't entail raging about somebody being with somebody else's woman. Me and David and Joni didn't think anything of it, that's for sure."
Document 8: Sony Music: In 1966, CBS reorganized its corporate structure with Leiberson promoted to head the new "CBS-Columbia Group" which made the now renamed CBS Records company a separate unit of this new group run by Clive Davis.
Document 9: Sony Music: Doug Morris, who was head of Warner Music Group, then Universal Music, became chairman and CEO of the company on July 1, 2011. Sony Music underwent a restructuring after Morris' arrival. He was joined by L.A. Reid, who became the chairman and CEO of Epic Records. Under Reid, multiple artists from the Jive half of the former RCA/Jive Label Group moved to Epic. Peter Edge became the new CEO of the RCA Records unit. The RCA Music Group closed down Arista, J Records and Jive Records in October 2011, with the artists from those labels being moved to RCA Records.
Document 10: Musique Non-Stop: The video for ``Musique Non-Stop ''is notable in itself for showcasing a computer animated representation of the band. Created in 1983, it sat dormant for three years before finally being incorporated as the video for the song. The animation, which was complex for its time, was created by Rebecca Allen, using state - of - the - art facial animation software developed by the Institute of Technology in New York. The slow rate of the album's progress, combined with rapid changes in software animation, meant that Allen had to archive the animation program developed at the Institute of Technology until Hütter and Schneider were ready in 1986, to travel to New York to edit the images to the final version of`` Musique Non-Stop''.
Document 11: Hard rock: Established bands made something of a comeback in the mid-1980s. After an 8-year separation, Deep Purple returned with the classic Machine Head line-up to produce Perfect Strangers (1984), which reached number five in the UK, hit the top five in five other countries, and was a platinum-seller in the US. After somewhat slower sales of its fourth album, Fair Warning, Van Halen rebounded with the Top 3 album Diver Down in 1982, then reached their commercial pinnacle with 1984. It reached number two on the Billboard album chart and provided the track "Jump", which reached number one on the singles chart and remained there for several weeks. Heart, after floundering during the first half of the decade, made a comeback with their eponymous ninth studio album which hit number one and contained four Top 10 singles including their first number one hit. The new medium of video channels was used with considerable success by bands formed in previous decades. Among the first were ZZ Top, who mixed hard blues rock with new wave music to produce a series of highly successful singles, beginning with "Gimme All Your Lovin'" (1983), which helped their albums Eliminator (1983) and Afterburner (1985) achieve diamond and multi-platinum status respectively. Others found renewed success in the singles charts with power ballads, including REO Speedwagon with "Keep on Loving You" (1980) and "Can't Fight This Feeling" (1984), Journey with "Don't Stop Believin'" (1981) and "Open Arms" (1982), Foreigner's "I Want to Know What Love Is", Scorpions' "Still Loving You" (both from 1984), Heart’s "What About Love" (1985) and "These Dreams" (1986), and Boston's "Amanda" (1986).
Document 12: Bertelsmann Music Group: BMG Music Publishing, which was not part of the Sony BMG merger, was a business of the Bertelsmann Music Group until it was sold to Universal Music Group for €1.63 billion in 2007. Universal then folded the company into Universal Music Publishing Group, and the BMG name was retired. The company was headquartered at 245 Fifth Avenue, 8th Floor New York, New York 10016 and had operations in 36 offices in 25 countries.
Document 13: Sony Music: In March 2010, Sony Corp has partnered with The Michael Jackson Company with a contract of more than $250 million, the largest deal in recorded music history.
Document 14: Somebody to Love (Jefferson Airplane song): Written by The Great Society guitarist Darby Slick after realizing his girlfriend had left him, and first performed by that band, which included his then - sister - in - law Grace Slick on vocals, the song made little impact outside of the club circuit in the Bay Area. The song was released in 1966 as a single with the B - side another Darby Slick composition titled ``Free Advice ''on the North Beach subsidiary of Autumn Records, and received minimal circulation outside of San Francisco. San Francisco in the mid - '60s was the epicenter of free love, but Darby Slick saw a downside to this ethos, as it could lead to jealousy and disconnect. This song champions loyalty and monogamy, as the singer implores us to find that one true love that will nurture us and get us through the tough times.
Document 15: Love the One You're With: ``Love the One You're With ''is a song by folk rocker Stephen Stills. It was released as the lead single from his debut self - titled studio album in November 1970. The song, inspired by a remark Stills heard from musician Billy Preston, became his biggest hit single, peaking at No. 14 on the Billboard Hot 100 in early 1971. David Crosby and Graham Nash, Stills' fellow members of Crosby, Stills & Nash, provide background vocals on the song. The song was also covered by a number of artists, including The Isley Brothers, Bucks Fizz, and Luther Vandross.
ground_truth: Peter Edge
sub_queries: who sang dont you want somebody to love Answer: Grace Slick
Grace Slick >> record label Answer: RCA Records
Who became the CEO of RCA Records ? Answer: Peter Edge