Earlier today, it was proposed, on one of the mailing lists I receive, that it would be most interesting if the ice cream trucks would play "O Fortuna" (the opening of Carl Orff's Carmina Burana, which is the opening for Ozzy Osbourne and a number of other metal acts, which is the music in dozens of commercials and movies, for those who aren't sure.)

I think that would work much betterer than the happy go-lucky fare they usually play. Of course, "Ride of the Valkyrie" would also work well, if played quite loudly on a hi-fidelity system. Canned, I'm sure either one or the other would still sound like "The Entertainer" in the end.