We wouldn't say the nightlife here is all that hot; major dance clubs change frequently and few are open more than a couple of nights a week. See the City Weekly (www.cityweekly.net) for listings. Classical entertainment options, especially around Temple Sq, are plentiful.
Live Music & Theater
There are concerts on Temple Sq, at the Library and in Red Butte Garden in the summertime. The Salt Lake City Arts Council provides a complete cultural events calendar on its website (www.slcgov.com/calendars). Most tickets can be reserved through ArtTix.