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

Context paragraphs:
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".

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.

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.

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.

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.

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.

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.

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.

About Face (album): About Face is the second solo studio album by the English guitarist-singer-songwriter David Gilmour.  It was originally released in March 1984, on the label Harvest in the UK, and Columbia in the US.  Co-produced by Bob Ezrin and Gilmour, the album was recorded in 1983, in sessions that took place at Pathé Marconi Studio, in Boulogne-Billancourt, France.  Two tracks, "All Lovers Are Deranged" and the more radio-friendly "Love on the Air", were co-written by Gilmour and his long-time friend Pete Townshend, the main songwriter for The Who (Gilmour composed the music and Townshend wrote the lyrics).  The remainder of the tracks are credited solely to Gilmour.  In May of the same year, fellow Pink Floyd member Roger Waters released his first official solo album "The Pros and Cons of Hitch Hiking".

No Plan B (band): No Plan B, also known as the Roger Daltrey Band, is a rock band assembled by The Who singer Roger Daltrey to support performances and tours outside of The Who.  Daltrey's band includes Simon Townshend (brother of Pete Townshend) on guitar and vocals, Frank Simes on lead guitar, Jon Button on bass, Loren Gold on keyboards and Scott Devours on drums.  Frank Simes is also Musical Director for the band.  In a 2010 appearance on "The Alan Titchmarsh Show", Daltrey called the band No Plan B.

Supporting paragraphs: Roger Daltrey David Gilmour
Answer: English singer