Question: Kerry Ellis Sings the Great British Songbook was the first set of solo concerts by English stage actress and singer Kerry Ellis, it included an encore with which English musician, singer, songwriter and astrophysicist, best known as the lead guitarist of the rock band Queen?
Context: Acoustic by Candlelight: Live on The Born Free Tour is the first live album by actress and singer Kerry Ellis and rock musician Brian May, released on 17 June 2013.  The 15-track album consists of material from live shows of the first leg of their Born Free Tour, which the pair embarked on in late 2012. Anthems is the debut studio album by actress and singer Kerry Ellis which was released on 13 September 2010 by Decca Records.  Produced by rock musician Brian May, the album comprises eleven tracks that tap into all the different areas that Ellis had been part of in her professional career between the years 2000 and 2010.  Photography for the album's artwork was completed by Paul Rider with design and art direction by Tourist. Band of Brothers is the second studio album by the choir Only Men Aloud! .  Unlike their self-titled debut, it featured several traditional Welsh songs, the album closing with a version of "Land of My Fathers".  However, as on the first album, the choir also included covers of pop songs "Total Eclipse of the Heart", a duet with the original singer Bonnie Tyler, "Somebody to Love" with featured vocalist Kerry Ellis, and "Scarborough Fair". Wicked in Rock is an EP by actress and singer Kerry Ellis.  It was arranged, produced and accompanied on guitar by Brian May and features Taylor Hawkins on drums.  A 60+ piece orchestra, conducted by Steve Sidwell, was also used.  The album had a physical release on 7 July 2008 as a CD and as a 12" vinyl.  The EP was also released for digital download.  The three tracks on this EP are included on her debut studio album "Anthems" (2010). Brian Harold May, {'1': ", '2': ", '3': ", '4': "} (born 19 July 1947) is an English musician, singer, songwriter and astrophysicist, best known as the lead guitarist of the rock band Queen.  He uses a home-built electric guitar, called the Red Special.  His compositions for the band include "We Will Rock You", "Tie Your Mother Down", "I Want It All", "Fat Bottomed Girls", "Flash", "Hammer to Fall", "Save Me", "Who Wants to Live Forever" and "The Show Must Go On". The Born Free Tour is the second headlining concert tour by English stage actress and singer Kerry Ellis with Brian May.  The original 2012 tour comprised 11 dates in and around the home counties of England, beginning on 5 November 2012 at the Apex in Bury St Edmunds, and finishing at the Swan Theatre in High Wycombe. Kerry Ellis Sings the Great British Songbook was the first set of solo concerts by English stage actress and singer Kerry Ellis.  The tour, comprising dates at the Shaw Theatre in London in June 2009, saw her through a set list of more than 20 numbers with an encore that included Brian May. Anthems: The Tour was the debut headlining concert tour by English stage actress and singer Kerry Ellis with Brian May.  The tour, comprising 16 dates in Great Britain, supported her debut album "Anthems".  Beginning with two charity performances, titled Anthems: The Concert, on 1 May 2011 at the Royal Albert Hall, the tour followed commenced on 3 May 2011 and ended on 16 July 2011 with a special titled Anthems in the Park at RAF Cranwell.  Receiving positive reviews, the tour was complimented by critics for the pairing of May's sound and Ellis' vocals. The discography of Kerry Ellis, a British stage actress and singer, consists of one studio album, one extended play, three cast recordings, and five singles.  Her debut album "Anthems" was released in September 2010. Fun on Earth is the fifth studio album by English musician Roger Taylor, best known as the drummer in British rock band Queen, released on 11 November 2013 through Virgin EMI in the United Kingdom and Hollywood Records in North America.  It was recorded in late 2008 and throughout 2009, after the conclusion of Queen + Paul Rodgers' Rock the Cosmos Tour, and was continued after the collaboration ended.  It was the first album he had worked on since 2008's "The Cosmos Rocks" with Queen + Paul Rodgers, and his first solo album since 1998's "Electric Fire".
Answer: Brian Harold May