One of the first people to recognise the power of sped-up vocals was Ross Bagdasarian, who in 1957 bought a taperecorder from his last money, and created Witch Doctor, released under the stage name David Seville. A number one hit in 1958. An encounter with a small chipmunk in Yosemite Park launched the idea of singing rodents. To cut a long story short: Alvin & the Chipmunks became a huge success, that started with a Christmas-song (this one). Decades later, the Royce Godrich All-stars followed Bagdasarians lead for a funny Christmas song about Santa's little helpers. Or, in their own words: 'Finally - a song that gives some credit to the little guys that do all the dirty work for the big guy.'
Royce Godrich All-stars - Elves are people too