Question: What year did the songwriter of Love of My Life die?

full_context: Document 1: Crazy Little Thing Called Love: Having composed "Crazy Little Thing Called Love" on guitar, Mercury played rhythm guitar while performing the song live, which was the first time he played guitar in concert with Queen. Queen played the song live between 1979 and 1986, and a live performance of the song is recorded in the albums "Queen Rock Montreal", "Queen on Fire – Live at the Bowl" , "Live at Wembley '86" and "" '. Since its release, the song has been covered by a number of artists. The song was played live on 20 April 1992 during The Freddie Mercury Tribute Concert, performed by Robert Plant with Queen. The style of the song was described by author Karl Coryat as rockabilly in his 1999 book titled "The Bass Player Book".
Document 2: Queen (band): Brian May and Roger Taylor performed together at several award ceremonies and charity concerts, sharing vocals with various guest singers. During this time, they were billed as Queen + followed by the guest singer's name. In 1998, the duo appeared at Luciano Pavarotti's benefit concert with May performing "Too Much Love Will Kill You" with Pavarotti, later playing "Radio Ga Ga", "We Will Rock You", and "We Are the Champions" with Zucchero. They again attended and performed at Pavarotti's benefit concert in Modena, Italy in May 2003. Several of the guest singers recorded new versions of Queen's hits under the Queen + name, such as Robbie Williams providing vocals for "We Are the Champions" for the soundtrack of A Knight's Tale (2001).
Document 3: Queen (band): Queen are a British rock band formed in London in 1970. Their classic line-up was Freddie Mercury (lead vocals and piano), Brian May (lead guitar and vocals), Roger Taylor (drums and vocals) and John Deacon (bass guitar). Their earliest works were influenced by progressive rock, hard rock and heavy metal, but the band gradually ventured into more conventional and radio-friendly works by incorporating further styles, such as arena rock and pop rock.
Document 4: Queen (band): In 1963, the teenage Brian May and his father custom-built his signature guitar Red Special, which was purposely designed to feedback. Sonic experimentation figured heavily in Queen's songs. A distinctive characteristic of Queen's music are the vocal harmonies which are usually composed of the voices of May, Mercury, and Taylor best heard on the studio albums A Night at the Opera and A Day at the Races. Some of the ground work for the development of this sound can be attributed to their former producer Roy Thomas Baker, and their engineer Mike Stone. Besides vocal harmonies, Queen were also known for multi-tracking voices to imitate the sound of a large choir through overdubs. For instance, according to Brian May, there are over 180 vocal overdubs in "Bohemian Rhapsody". The band's vocal structures have been compared with the Beach Boys, but May stated they were not "much of an influence".
Document 5: Queen (band): At the end of 2004, May and Taylor announced that they would reunite and return to touring in 2005 with Paul Rodgers (founder and former lead singer of Free and Bad Company). Brian May's website also stated that Rodgers would be "featured with" Queen as "Queen + Paul Rodgers", not replacing Mercury. The retired John Deacon would not be participating. In November 2004, Queen were among the inaugural inductees into the UK Music Hall of Fame, and the award ceremony was the first event at which Rodgers joined May and Taylor as vocalist.
Document 6: Love of My Life (Queen song): ``Love of My Life ''is a ballad by the British rock band Queen from their 1975 album A Night at the Opera. The song was written by Freddie Mercury about Mary Austin, with whom he had a long term relationship in the early 1970s. After performing the song in South America in 1981, the version from their live album Live Killers reached number 1 in the singles chart in Argentina and Brazil, and stayed in the charts in Argentina for an entire year.
Document 7: While My Guitar Gently Weeps: George Harrison -- double - tracked vocals, backing vocal, acoustic guitar, twelve - string guitar, Hammond organ Paul McCartney -- harmony vocal, piano, bass John Lennon -- electric guitar with tremolo Ringo Starr -- drums, tambourine, castanets Eric Clapton -- lead guitar (uncredited)
Document 8: Love of My Life (Queen song): Freddie Mercury wrote it on the piano and guitar first, and Brian May rearranged the song for acoustic 12-string guitar for live performances, also lowering the key by a minor third. May contributed occasional guitar phrases to the original recording and played the swooping harp glissandos by pasting together multiple takes of single chords. The song is an example of Mercury's familiarity with rubato phrasing, showcasing his classical piano influences, notably by Chopin and Beethoven.
Document 9: Queen (band): In 1997, Queen returned to the studio to record "No-One but You (Only the Good Die Young)", a song dedicated to Mercury and all those that die too soon. It was released as a bonus track on the Queen Rocks compilation album later that year. In January 1997, Queen performed "The Show Must Go On" live with Elton John and the Béjart Ballet in Paris on a night Mercury was remembered, and it marked the last performance and public appearance of John Deacon, who chose to retire. The Paris concert was only the second time Queen had played live since Mercury's death, prompting Elton John to urge them to perform again.
Document 10: Queen (band): Between 2005 and 2006, Queen + Paul Rodgers embarked on a world tour, which was the first time Queen toured since their last tour with Freddie Mercury in 1986. The band's drummer Roger Taylor commented; "We never thought we would tour again, Paul [Rodgers] came along by chance and we seemed to have a chemistry. Paul is just such a great singer. He's not trying to be Freddie." The first leg was in Europe, the second in Japan, and the third in the US in 2006. Queen received the inaugural VH1 Rock Honors at the Mandalay Bay Events Center in Las Vegas, Nevada, on 25 May 2006. The Foo Fighters paid homage to the band in performing "Tie Your Mother Down" to open the ceremony before being joined on stage by May, Taylor, and Paul Rodgers, who played a selection of Queen hits.
Document 11: Bohemian Rhapsody: Starting with the A Day at the Races Tour in 1977, the band adopted their lasting way of playing the song live. The opening ballad would be played on stage, and after Brian May's guitar solo, the lights would go down, the band would leave the stage, and the operatic section would be played from tape, while coloured stage lights provided a light show based around the voices of the opera section. A blast of pyrotechnics after Roger Taylor's high note on the final ``for me ''would announce the band's return for the hard rock section and closing ballad. Queen played the song in this form all through the Magic Tour of 1986. This style was also used for the Freddie Mercury Tribute Concert, with Elton John singing the opening ballad and then after the taped operatic section, Axl Rose singing the hard rock section. John and Rose sang the closing ballad part together in a duet.
Document 12: Queen (band): The band had a number of bass players during this period who did not fit with the band's chemistry. It was not until February 1971 that they settled on John Deacon and began to rehearse for their first album. They recorded four of their own songs, "Liar", "Keep Yourself Alive", "The Night Comes Down" and "Jesus", for a demo tape; no record companies were interested. It was also around this time Freddie changed his surname to "Mercury", inspired by the line "Mother Mercury, look what they've done to me" in the song "My Fairy King". On 2 July 1971, Queen played their first show in the classic line-up of Mercury, May, Taylor and Deacon at a Surrey college outside London.
Document 13: Queen (band): Before forming Queen, Brian May and Roger Taylor had played together in a band named Smile. Freddie Mercury (then known by his birth name of Farrokh "Freddie" Bulsara) was a fan of Smile and encouraged them to experiment with more elaborate stage and recording techniques. Mercury joined the band in 1970, suggested "Queen" as a new band name, and adopted his familiar stage name. John Deacon was recruited prior to recording their eponymous debut album in 1973. Queen first charted in the UK with their second album, Queen II, in 1974, but it was the release of Sheer Heart Attack later that year and A Night at the Opera in 1975 which brought them international success. The latter featured "Bohemian Rhapsody", which stayed at number one in the UK for nine weeks and popularised the music video. Their 1977 album, News of the World, contained "We Will Rock You" and "We Are the Champions", which have become anthems at sporting events. By the early 1980s, Queen were one of the biggest stadium rock bands in the world. Their performance at 1985's Live Aid is ranked among the greatest in rock history by various music publications, with a 2005 industry poll ranking it the best. In 1991, Mercury died of bronchopneumonia, a complication of AIDS, and Deacon retired in 1997. Since then, May and Taylor have occasionally performed together, including with Paul Rodgers (2004–09) and with Adam Lambert (since 2011). In November 2014, Queen released a new album, Queen Forever, featuring vocals from the late Mercury.
Document 14: Queen (band): On 25 and 26 April, May and Taylor appeared on the eleventh series of American Idol at the Nokia Theatre, Los Angeles, performing a Queen medley with the six finalists on the first show, and the following day performed "Somebody to Love" with the 'Queen Extravaganza' band. Queen were scheduled to headline Sonisphere at Knebworth on 7 July 2012 with Adam Lambert before the festival was cancelled. Queen's final concert with Freddie Mercury was in Knebworth in 1986. Brian May commented, "It's a worthy challenge for us, and I'm sure Adam would meet with Freddie's approval." Queen expressed disappointment at the cancellation and released a statement to the effect that they were looking to find another venue. It was later announced that Queen + Adam Lambert would play two shows at the Hammersmith Apollo, London on 11 and 12 July 2012. Both shows sold out within 24 hours of tickets going on open sale. A third London date was scheduled for 14 July. On 30 June, Queen + Lambert performed in Kiev, Ukraine at a joint concert with Elton John for the Elena Pinchuk ANTIAIDS Foundation. Queen also performed with Lambert on 3 July 2012 at Moscow's Olympic Stadium, and on 7 July 2012 at the Municipal Stadium in Wroclaw, Poland.
Document 15: I Was Born to Love You (song): "I Was Born to Love You" is a 1985 song by Freddie Mercury, and was released as a single and on the "Mr. Bad Guy" album. After Mercury's death, Queen re-worked this song for their album "Made in Heaven" in 1995, by having the other members play their instrumental parts over the original track, transforming the song from a disco song to a rock song. The Queen version from the "Made in Heaven" album also includes samples of Mercury's ad-lib vocals taken from "A Kind of Magic" and from "Living on My Own".
ground_truth: 1991
sub_queries: Love of My Life >> lyrics by Answer: Freddie Mercury
In what year did Freddie Mercury die? Answer: 1991