I got an email from Mack asking me about the Austrian Song, along with some lyrics he'd remembered. It didn't ring a bell immediately but then started coming back to me, especially as I did a little research on it. What threw me off, I think, is that I only recall it as a Girls Camp song and Mack only went to Boys Camp.
Looking for an audio file to jog my memory, I stumbled across something interesting or perhaps a little bizarre: a "virtual karaoke" site where people can post their Sims version of songs. There are a few for the Austrian Song. Check this one out - it also links to others: