The Midsummer Mozart Festival, the only music festival in North America dedicated exclusively to Mozart, presents its 2007 opening concert. George Cleve conducts the festival orchestra at 8 p.m. Friday at the Herbst Theatre, 401 Van Ness Ave., San Francisco. Tickets are $30 to $60.

Call (415) 392-4400 or visit www.midsummermozart.org.