Question: Christmas Love Duets includes the John Lennon song that was released in what year as a single?
Sentence (from "Happy Xmas (War Is Over)"): "Happy Xmas (War Is Over)" is a Christmas song with lyrics by John Lennon and Yoko Ono, released in 1971 as a single by John & Yoko/Plastic Ono Band with the Harlem Community Choir.
Relevant evidence: Yes