Question: In which year was this American singer-songwriter, multi-instrumentalist, and record producer of "Sexy Dancer" inducted into the Rock and Roll Hall of Fame?
Context: Prince Rogers Nelson (June 7, 1958 – April 21, 2016) was an American singer-songwriter, multi-instrumentalist, and record producer.  He was a musical innovator who was known for his eclectic work, flamboyant stage presence, extravagant dress and makeup, and wide vocal range.  His music integrates a wide variety of styles, including funk, rock, R&B, new wave, soul, psychedelia, and pop.  He has sold over 100 million records worldwide, making him one of the best-selling music artists of all time.  He won seven Grammy Awards, an American Music Award, a Golden Globe Award, and an Academy Award for the film "Purple Rain".  He was inducted into the Rock and Roll Hall of Fame in 2004, his first year of eligibility. Crosby, Stills & Nash (CSN) was a vocal folk rock supergroup made up of American singer-songwriters David Crosby and Stephen Stills and English singer-songwriter Graham Nash.  They were known as Crosby, Stills, Nash & Young (CSNY) when joined by Canadian singer-songwriter Neil Young, who was an occasional fourth member.  They were noted for their intricate vocal harmonies, often tumultuous interpersonal relationships, political activism, and lasting influence on US music and culture.  Crosby, Stills & Nash were inducted into the Rock and Roll Hall of Fame and all three members were also inducted for their work in other groups (Crosby for the Byrds, Stills for Buffalo Springfield and Nash for the Hollies).  Neil Young has also been inducted as a solo artist and as a member of Buffalo Springfield. 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. "My Generation" is a song by the English rock band The Who, which became a hit and one of their most recognisable songs.  The song was named the 11th greatest song by "Rolling Stone" "Magazine" on its list of the 500 Greatest Songs of All Time and 13th on VH1's list of the 100 Greatest Songs of Rock & Roll.  It is also part of The Rock and Roll Hall of Fame's 500 Songs that Shaped Rock and Roll and is inducted into the Grammy Hall of Fame for "historical, artistic and significant" value.  In 2009 it was named the 37th Greatest Hard Rock Song by VH1. Warren "Pete" Moore (born November 19, 1939) is an American singer-songwriter and record producer notable as the bass singer for Motown group The Miracles from 1955 onwards, and is one of the group's original members.  He is also a 2012 Rock and Roll Hall of Fame Inductee, and a BMI and ASCAP award-winning songwriter, and was the vocal arranger on all of the group's hits. The Rock and Roll Hall of Fame, located on the shore of Lake Erie in downtown Cleveland, Ohio, recognizes and archives the history of the best-known and most influential artists, producers, engineers, and other notable figures who have had some major influence on the development of rock and roll.  The Rock and Roll Hall of Fame Foundation was established on April 20, 1983, by Atlantic Records founder and chairman Ahmet Ertegun.  In 1986, Cleveland was chosen as the Hall of Fame's permanent home.  Since opening in September 1995, the "Rock Hall" – part of the city's redeveloped North Coast Harbor – has hosted more than 10 million visitors and had a cumulative economic impact estimated at more than $1.8 billion. "Sexy Dancer" was the follow-up single to Prince's self-titled second album in the UK.  It was the first Prince single released outside the United States that was not released as a single stateside.  The funky disco number has few lyrics but is not short on funk, using prominent bass guitar, grunts and screams to excite the listener. The Rock and Roll Hall of Fame and the Rhythm and Blues Music Hall of Fame are located in Cleveland, Ohio.  Ohio musicians inducted into the Rock and Roll Hall of Fame include, The Isley Brothers (from Cincinnati) in '92, The Moonglows (from Cleveland) in 2000, The O'Jays (from Canton) in '05, Chrissie Hynde (from Akron) of The Pretenders in '05, and Bobby Womack (from Cleveland) (d.2014) in '09.  This state is also the home of four major symphony orchestras which are located in Cleveland, Akron, Cincinnati, and Dayton as well as a "pops" orchestra, the Cincinnati Pops. 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. Isaac Lee Hayes Jr. (August 20, 1942 – August 10, 2008) was an American singer-songwriter, actor, voice actor and producer.  Hayes was one of the creative forces behind the Southern soul music label Stax Records, where he served both as an in-house songwriter and as a session musician and record producer, teaming with his partner David Porter during the mid-1960s.  Hayes and Porter, along with Bill Withers, the Sherman Brothers, Steve Cropper, and John Fogerty were inducted into the Songwriters Hall of Fame in 2005 in recognition of writing scores of songs for themselves, the duo Sam & Dave, Carla Thomas, and others.  Hayes was also a 2002 inductee into the Rock and Roll Hall of Fame.
Answer: 2004