(SOUNDBITE OF SONG, "THE CHIPMUNK SONG (CHRISTMAS DON'T BE LATE)") ROSS BAGDASARIAN: (As Dave) All right, you chipmunks. Ready to sing your song? (As Alvin) I'd say we are. (As Theodore ...

Ross Jr. voiced Alvin, Simon, and David, while his wife, Janice Karman, voiced Theodore and the Chipettes, the girl version of the Chipmunks. (Source: LA Times) "A Chipmunk Christmas" was the ...