Question: Which choir originally sang the John Lennon Song what is incorporated into the song "K Cera Cera"?
Sentence (from "K Cera Cera"): The song was an amalgam of Jay Livingston/Ray Evans's "Que Sera, Sera (Whatever Will Be, Will Be)" and John Lennon/Yoko Ono's "Happy Xmas (War Is Over)".
Relevant evidence: Yes