Petaluma group Los Gu'achis performs at 2 p.m. Saturday, Dec. 21 at the Petaluma Historical Library & Museum, 20 Fourth St.

The performance is part of the museum's "Winter Wonderland" exhibit celebrating Christmas, Hanukkah and Kwanzaa.

Regular museum admission is $5 general, free for children 12 and under. For information, call 778-4398.