Question: Queen are a British rock band that formed in London, which British singer, songwriter and record producer, was known as the lead vocalist?

Context articles: Queen (band)
Fruit (band)
Coldplay
Freddie Mercury
Chris Martin
Tom DeLonge
Dan Smith (singer)
Caron Wheeler
Daron Malakian
Toby Jepson

Queen are a British rock band that formed in London in 1970.
 Their classic line-up was Freddie Mercury (lead vocals, piano), Brian May (lead guitar, vocals), Roger Taylor (drums, vocals), and John Deacon (bass guitar).
 Queen's 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, into their music.
Fruit are an indie folk rock band from Adelaide, Australia.
 The group was formed in 1995, and consists of Mel Watson (lead vocalist, horn player, songwriter), Susie Keynes (lead vocalist, guitarist, songwriter), Sam Lohs (lead vocalist, acoustic guitarist, songwriter), Yanya Boston (drums, percussion), and Brian Ruiz (Bass guitar).
 In 2003 they won the "Best Live Album" award at the Australian Live Music Awards.
 Their most recent album is Burn, which was released in June 2005.
Coldplay are a British rock band formed in 1996 by lead vocalist and keyboardist Chris Martin and lead guitarist Jonny Buckland at University College London (UCL).
 After they formed under the name Pectoralz, Guy Berryman joined the group as bassist and they changed their name to Starfish.
 Will Champion joined as drummer and backing vocalist, completing the lineup.
 Creative director Phil Harvey is often referred to as the fifth member by the band.
 The band renamed themselves "Coldplay" in 1998, before recording and releasing three EPs: "Safety" in 1998 and "Brothers & Sisters" and "The Blue Room" in 1999.
 "The Blue Room" was their first release on a major label, after signing to Parlophone.
Farrokh "Freddie" Mercury (born Bulsara; 5 September 1946 – 24 November 1991) was a British singer, songwriter and record producer, known as the lead vocalist of the rock band Queen.
 He was known for his flamboyant stage persona and four-octave vocal range.
 Mercury wrote numerous hits for Queen, including "Bohemian Rhapsody", "Killer Queen", "Somebody to Love", "Don't Stop Me Now", "Crazy Little Thing Called Love", and "We Are the Champions".
 He led a solo career while performing with Queen, and occasionally served as a producer and guest musician for other artists.
Christopher Anthony John Martin (born 2 March 1977) is an English singer, songwriter, musician, record producer and philanthropist.
 He is best known as the lead singer and co-founder of the British rock band Coldplay.
 Born in Whitestone, near Exeter in Devon, Martin went to University College London where he formed a rock band with Jonny Buckland in 1996 called Pectoralz, which was eventually renamed Coldplay in 1998.
Thomas Matthew DeLonge Jr. (born December 13, 1975) is an American musician, singer, songwriter, record producer, entrepreneur, and film producer.
 He is the guitarist and lead vocalist of the rock band Angels & Airwaves and was the guitarist and co-lead vocalist of the rock band Blink-182, which he co-founded, from 1992 to 2015.
 DeLonge grew up in the suburbs of Poway, California, where he embraced skateboarding at an early age.
 DeLonge received his first guitar shortly thereafter and began writing original punk rock songs.
 He formed Blink-182 with bassist Mark Hoppus and drummer Scott Raynor during his high school years.
 The band created a following in the mid-1990s through independent releases and relentless touring, particularly in their home country and in Australia.
 They signed to MCA Records in 1996 and their second album, "Dude Ranch" (1997), featured the hit single "Dammit".
Daniel Campbell "Dan" Smith (born 14 July 1986) is a British singer-songwriter and record producer.
 He is the lead singer, primary songwriter.
 and founder of the British rock band Bastille.
 The band formed in 2010 and gained mass popularity in 2013 when the song "Pompeii" was released.
 The band released their second album, "Wild World" in September 2016.
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Caron Wheeler (born 19 January 1963) is a British singer, songwriter, record producer and musician.
 Born and raised in London, she performed in various singing competitions as a teenager and began her recording career as one of the founding members of Brown Sugar.
 She was also one of the founding member of the female backing vocalist group Afrodiziak.
 She officially rose to fame in the late 1980s as lead singer of R&B group Soul II Soul.
 Managed by her fellow bandmate, Jazzie B, the group became one of the London's best-selling groups of all time.
 Their debut album, "Club Classics Vol.
 One" (1989), which established them as a global success worldwide, earned two Grammy Awards and featured the UK and Billboard number-one singles "Keep on Movin'" and "Back to Life (However Do You Want Me)".
Daron Vartan Malakian (Armenian: Տարօն/Տարոն Վարդան Մալաքեան, born July 18, 1975) is an Armenian–American singer-songwriter, multi-instrumentalist, and record producer.
 He is best known as the guitarist, songwriter and second vocalist of the rock band System of a Down and as the lead vocalist, lead guitarist and songwriter of the band Scars on Broadway.
 Like the rest of the Hollywood-based band System of a Down, he is of Armenian ancestry, but he is the only member to have been born in the United States.
 Daron Malakian is known for his distinctive playing and is ranked 40th in Loudwire's list of "Top 50 Hard Rock + Metal Guitarists Of All Time" and #11 in MusicRadar's poll, "The 20 Greatest Metal Guitarists Ever".
 He is placed 30th in Guitar World's List of The 100 Greatest Heavy Metal Guitarists of All Time.
Toby Matthew Jepson (born 9 October 1967 in Lincoln, England) is a singer and songwriter, and was lead vocalist and guitarist in the British rock band Little Angels between 1984 and 1994.
 Between 2008 and 2010, he was the lead singer with Scottish rock band Gun.