opera?

[brackster]

in which opera do a tobagganer and a skier collide?

[Killerschick]

A-ha another CAB quizzer, don't worry I'm not going to berate you for denigrating the spirit of the quiz! I found the answer to this one on either this site or a similar one, although I didn't post it myself, it was where I ended up after a Google search. Anyway, it's apparently Intermezzo by Richard Strauss.