Just to clarify, it was an IBM 704 that was the first computer to sing in 1961. HAL sings the song in the movie because it was one of the first things HAL learned.
Your songGirl A: Sing a song for me, Siri.Known as the first song in the world sung by a computer.
Sung by HAL9000-san, character of the movie 2001: A Space Odyssey.
Siri-san, you're really a maniac...