Here's a link to an article about a related phenomenon: the unison shouting of "Air-Ball" and how it relates to earliest childhood tune imprinting(e.g., "yoo-hoo"):

http://www.s-t.com/daily/09-95/09-13-95/0913airball.HTML

This is fascinating stuff! We need a linguist to help us understand how our brains replace tunes with verbal meanings (a la Walrus' experience above.

Dani