Robert Walter's 20th Congress Jazz funk keyboardist and his band return for another New Year's at the Elbo Room. 10 p.m., Monday, Dec. 31; $20. Elbo Room, 647 Valencia (at 18th St.), 552-7788.
San Francisco Symphony New Year's Eve Gala Ring in the New Year with a concert, party favors, champagne, savories, and desserts. 8 p.m., Monday, Dec. 31; $87-$145. Davies Symphony Hall, 201 Van Ness (at Grove), 864-6000.
Steve Kimock Band Cutting-edge improvisation from the Bay Area guitarist. 9 p.m., Monday, Dec. 31; $50 (tickets available at venue box office, or by fax: 885-5075).
Great American Music Hall, 859 O'Farrell (at Polk), 885-0750.
Superhero's Costume Ball Peak Experience Productions joins with the String Cheese Incident and Keller Williams. 8 p.m., Monday, Dec. 31; $60. Bill Graham Civic Auditorium, 99 Grove (at Larkin), 303-544-5875 / www.sciticketing.com.
True Fiction Magazine Improvisational Theater San Francisco's popular improv troupe returns for its annual New Year's Eve show. 8 p.m., Monday, Dec. 31; $20. Florence Gould Theater at the Palace of the Legion of Honor, Lincoln Park (near 34th Ave. and Clement), 824-1559.