Question: Roger Daltrey and David Gilmour, have what occupation, nationality in common?

full_context: Document 1: Roger Daltrey: Roger Harry Daltrey, {'1': ", '2': ", '3': ", '4': "} (born 1 March 1944) is an English singer and actor. In a career spanning more than 50 years, Daltrey came to prominence in the mid-1960s as the founder and lead singer of the rock band the Who, which released fourteen singles that entered the Top 10 charts in the United Kingdom during the 1960s, 1970s, and 1980s, including "I Can't Explain", "My Generation", "Substitute", "I'm a Boy", "Happy Jack", "Pictures of Lily", "Pinball Wizard", "Won't Get Fooled Again", and "You Better You Bet". Daltrey began his solo career in 1973, while still a member of the Who. Since then, he has released eight studio albums, five compilation albums, and one live album. His solo hits include "Giving It All Away", "Walking the Dog", "Written on the Wind", "Free Me", "Without Your Love", "Walking in My Sleep", "After the Fire", and "Under a Raging Moon". In 2010, he was ranked as number 61 on "Rolling Stone"' s list of the 100 greatest singers of all time.
Document 2: The Who: The Who are an English rock band that formed in 1964. Their classic line-up consisted of lead singer Roger Daltrey, guitarist and singer Pete Townshend, bass guitarist John Entwistle, and drummer Keith Moon. They are considered one of the most influential rock bands of the 20th century, selling over 100 million records worldwide and holding a reputation for their live shows and studio work.
Document 3: David Gilmour (album): David Gilmour is the debut solo studio album by Pink Floyd guitarist and co-lead vocalist David Gilmour. The album was released in May and June 1978 in the United Kingdom and the United States, respectively. The album reached number 17 in the UK and number 29 on the Billboard US album charts; it was certified Gold in the US by the RIAA. The album was produced by Gilmour, and consists mostly of blues, guitar oriented rock songs except for the piano-dominated ballad "So Far Away".
Document 4: Rod Stewart: Sir Roderick David "Rod" Stewart, {'1': ", '2': ", '3': ", '4': "} (born 10 January 1945) is a British rock singer and songwriter. Born and raised in London, he is of Scottish and English ancestry. Stewart is one of the best-selling music artists of all time, having sold over 100 million records worldwide. He has had six consecutive number one albums in the UK and his tally of 62 UK hit singles includes 31 that reached the top ten, six of which gained the #1 position. Stewart has had 16 top ten singles in the US, with four reaching #1 on the "Billboard" Hot 100. He was knighted in the 2016 Birthday Honours for services to music and charity.
Document 5: Free Me (Roger Daltrey song): "Free Me" is a song written by Russ Ballard and performed by Roger Daltrey, singer for English rock band The Who. The song is on Roger Daltrey's 1980 solo album "McVicar" and in the film "McVicar", also released in 1980.
Document 6: The Pride You Hide: "'The Pride You Hide'" is a song by Roger Daltrey, who at the time was the former lead singer of The Who. The song was written by Alan Dalgleish, Nicky Tesco and Roger Daltrey. The track was included on Roger Daltrey's sixth solo album, "Under a Raging Moon", as the fourth track on the first side of the LP. The album was a tribute to The Who's former drummer Keith Moon.
Document 7: Barn Jams: Barn Jams are a series of instrumental pieces written by Pink Floyd guitarist, David Gilmour and performed by him and the core members of his 2006 On an Island Tour band, Guy Pratt on bass, Richard Wright on keyboards and Steve DiStanislao on drums. The sessions were recorded and filmed in a barn at David's home in Sussex, England, in January 2007. It is unknown how many pieces exist, altrough Gilmour himself, in a bonus interview within the second DVD of his 2008 release "Live in Gdańsk", claims that he and guitarist Phil Manzanera (who co-produced the "On an Island" album) recorded and catalogued "close to 200" jams. Three tracks were released as part of the "Live in Gdańsk" 4-disc edition, deluxe edition and vinyl edition; one was released on "Remember That Night" (2007) and four more were released on the deluxe edition of Gilmour's 2015 "Rattle That Lock" album. The "Barn Jams" are the last released recordings made by Richard Wright before his death in 2008.
Document 8: David Gilmour Live 1984: Pink Floyd's David Gilmour or simply David Gilmour is a film by David Gilmour from his 1984 tour from the album "About Face" for Europe. The film is mainly a concert performance from The Hammersmith Odeon in London in April 1984. It also features promotional clips. Lastly, a documentary called "After The Floyd" which followed Gilmour on the 1984 solo tour and includes interviews with David on tour buses (the bus driver referred to David as ex-guitarist of Pink Floyd) and in hotel rooms. Also included is more live footage of concerts and soundchecks in Europe. It is now out of production.
Document 9: Under a Raging Moon (song): "Under a Raging Moon" is a song by Roger Daltrey, the lead singer of The Who. This song is the tenth & title track on Daltrey's sixth solo album, "Under a Raging Moon".
Document 10: Let Me Down Easy (Roger Daltrey song): "'Let Me Down Easy'" is a song by Roger Daltrey, who at the time was the former lead singer of The Who. The song was written by Bryan Adams and Jim Vallance and included on Daltrey's sixth solo album "Under a Raging Moon" as the first track on the second side of the LP. The album was a tribute to The Who's former drummer Keith Moon. The song was released as a single in November 1985 on Atlantic Records.
Document 11: One Man Band (Roger Daltrey song): One Man Band is a song by The Who's lead singer, Roger Daltrey from his début solo album "Daltrey". The song was written by David Courtney and Leo Sayer, and features Daltrey's Acoustic guitar strumming. According to Daltrey, it "reminiscences of Shepherd's Bush" (A place in west London where Daltrey had grown up and The Who were formed) and became one the albums highlights of the album, and later being released as a single in its own right in some European territories.
Document 12: David Gilmour in Concert: David Gilmour in Concert is a DVD of Pink Floyd guitarist David Gilmour's solo concert at the Royal Festival Hall, London in June 2001, as part of the Robert Wyatt-curated Meltdown festival. It also features additional footage recorded during three concerts at the same venue in January 2002. The track selection includes several Pink Floyd compositions in addition to Gilmour's solo works. Guest appearances are made by Floyd colleague Richard Wright, as well as Robert Wyatt and Bob Geldof. It includes the first ever performance of "Smile" a track which would appear almost five years later on Gilmour's third solo album - "On an Island", and Gilmour even plays a few Syd Barrett compositions. Also included is "Je crois entendre encore " ("I still believe I hear"), an aria from Georges Bizet's opera "Les pêcheurs de perles " ("The Pearl Fishers"), with a libretto by Eugène Cormon and Michel Carré, and sung by Gilmour in the original French.
Document 13: Syd Barrett: Roger Keith "Syd" Barrett (6 January 1946 – 7 July 2006) was an English musician, composer, singer-songwriter, and painter. Best known as a founder member of the band Pink Floyd, Barrett was the lead singer, guitarist and principal songwriter in its early years and is credited with naming the band. Barrett was excluded from Pink Floyd in April 1968 after David Gilmour took over as their new guitarist, and was briefly hospitalised amid speculation of mental illness.
Document 14: David Gilmour: David Jon Gilmour, {'1': ", '2': ", '3': ", '4': "} (born 6 March 1946) is an English guitarist, singer and songwriter best known as a longtime member of the progressive rock band Pink Floyd. He joined group as guitarist and co-lead vocalist in 1968, effectively as a replacement for founder member Syd Barrett, who was dismissed from the band shortly afterwards.
Document 15: A Momentary Lapse of Reason: A Momentary Lapse of Reason is the thirteenth studio album by English progressive rock band Pink Floyd, released in the UK and US in 7 September 1987, on the labels EMI and Columbia. It followed guitarist David Gilmour's decision to include material recorded for his third solo album on a new Pink Floyd album with drummer Nick Mason and keyboardist Richard Wright. Although for legal reasons Wright could not be re-admitted to the band, Wright and Mason helped Gilmour craft what became the first Pink Floyd album since the December 1985 departure of bass guitarist, singer, and primary songwriter Roger Waters.
ground_truth: English singer