How often are tuxes or formal suits needed?

<p>I'm debating on whether to bring my suit/tux to WashU. Anyone know?</p>

<p>i'd bring a suit (for formals, or maybe a night out on the town), but i very rarely see guys in tuxes. never, actually, now that i think about it, other than the rare orchestra kid. do you do music?</p>

<p>yeah, i plan to play in a band/orchestra</p>

<p>even then, though, there are only four orchestra concerts a year (more if you're also in band or chamber orch) but even for those, most people i know just wear regular black suits and a black tie.</p>