"Don't You Remember When" is a song written by Lynsey de Paul and Barry Blue, that was released as a single by Vera Lynn on 13 February 1976 on the EMI record label.
 The song was recorded at the Marquee Studios, London and was produced by de Paul and she also sang backing vocals.
 Ringo Starr, who was de Paul's boyfriend at the time, played the tambourine on the song.
 De Paul also produced "That Old Feeling", the B-side of the single.
 Tony Hymas, who had worked with de Paul before and would go on to be a member of the duo Ph.D., arranged the song.
 De Paul was interviewed about how she wrote the song with Barry Blue especially for Vera Lynn after appearing on Lynn's TV show, as well as details about its recording in an article the UK music magazine, "Music Week".
 Lynn and De Paul held a press reception at the Dorchester Hotel in February 1975 to announce the release of the single.
 The song appeared on CD for the first time in 2007 as a track on the Vera Lynn compilation album, "Singles Collection".
"Somebody's Out There Watching" is a song written by Steve Booker, Franne Golde and Robin Lerner, and recorded by American country music duo The Kinleys.
 It was released in November 1998 as the first single from "".
 The song reached number 19 on the "Billboard" Hot Country Singles & Tracks chart, and became their biggest hit on the Billboard Hot 100, peaking at #64 in March 1999.
 The duo included the song as the last track of their second album "II", released in 2000.
Alexander Henry Fenwick "Xander" Armstrong (born 2 March 1970) is an English comedian, actor, television presenter and singer, best known as one half of the comedy duo Armstrong and Miller and as host of the BBC TV game show "Pointless".
We'll Meet Again: The Very Best of Vera Lynn is a compilation album by English singer Vera Lynn.
Vera Lynn 100 is a compilation album by English singer Vera Lynn.
 The album was released on 17 March 2017, by Decca Records, to celebrate Lynn's 100th birthday.
 Some of her best-known songs have been re-orchestrated for the album, which features original vocals.
 The album features a previously unreleased cover of "Sailing", and collaborations with singers Alfie Boe, Alexander Armstrong, Aled Jones and Cynthia Erivo.
 The singer also performed at a charity concert on 18 March, to raise funds for her children’s charity.
Her Greatest From Abbey Road is a compilation album by English singer Vera Lynn, released on 10 March 2017, by Parlophone and Warner Music UK to mark her 100th birthday.
 This album compiles Lynn's recordings from Abbey Road Studios for the first time on a Vera Lynn collection.
"I Love This Land" is a 1982 song by Vera Lynn that was released as a single in the aftermath of the Falklands War.
 The song was written by André Previn, and credited to "Vera Lynn and The Victory Group".
 The B-side was "The Victory Theme".
 It was released on State Records.
"You're in my Arms (and a million miles away)" is a 1941 song by Vera Lynn, with music by Michael Carr and lyrics by Jack Popplewell.
 Lynn recorded it with Mantovani and his Orchestra, and a version followed by Anne Shelton with Bert Ambrose and his Orchestra, also in 1941.
One Exciting Night is a 1944 British musical comedy film directed by Walter Forde and starring Vera Lynn, Donald Stewart and Mary Clare.
 The film was also known as You Can't Do Without Love.
 The screenplay concerns a female singer who becomes involved with a man who is the victim of a kidnap plot.
"My Son, My Son" is a traditional popular music song written by Gordon Melville Rees, Bob Howard and Eddie Calvert in 1954.
 A recording of the song by Vera Lynn reached number one in the UK Singles Chart in November that year.
 It was Lynn's only number one hit, reached towards the end of her peak of activity.
 Earlier, in 1951, she had reached #1 in the U.S. Billboard chart with her recording of "Auf Wiederseh'n Sweetheart".
 "My Son, My Son" was Lynn's fifth chart hit in the UK, following on from "Auf Wiederseh'n Sweetheart", "Forget-Me-Not", "The Homing Waltz" (all 1952) and "The Windsor Waltz" (1953).

Question: Which comedy duo included a singer who contributed to "Vera Lynn 100"?
Answer: Armstrong and Miller