Friday, May 2
Nina Gerber and Chris Webster: Singer Webster and guitarist Gerber celebrate the release of their ‘Apple Blossom Lane’ CD at 7:30 tonight at the Occidental Center for the Arts, 3850 Doris Murphy Court, Occidental. $25 in advance; $27 day of show. northbaylive.com.
Friday, May 2
Planet Bass: Witness powerful visuals and instrumentals, with live DJs, at 8 tonight Phoenix Theater, 201 Washington St., Petaluma. The line-up includes Computation!, DJ DynamiK, Mitchell Cukr, MrMun0z and Chase Me. $10-$12. 762-3565, thephoenixtheater.com.
May 2-4 & 11
‘Once on this Island’: The Cinnabar Theater's Young Rep company presents the Broadway musical, inspired by Hans Christian Andersen's ‘Little Mermaid’ and Rosa Guy's novel ‘My, Love, My Love,’ at 8 p.m. May 2-3 and 9-10 and 2 p.m. May 4 and 11. 3333 Petaluma Blvd. N., Petaluma. $10-$15. 763-8920, cinnabartheater.org.
May 2 & 4
Sonoma Bach Choir: Accompanied by the Live Oak Baroque Orchestra, the choir will perform at 8 p.m. Friday at the Saturday Afternoon Club, 430 10th St., Santa Rosa, and 4 p.m. Sunday at the St. Andrew Presbyterian Church, 16290 Arnold Drive, Sonoma. $12-$20. 877-914-2224, sonomabach.org.
Santa Rosa Symphony: Pianist Jon Kimura Parker joins the orchestra, led by Bruno Ferrandis, at 8 p.m. Saturday and Monday, and 3 p.m. Sunday, in Weill Hall at the Green Music Center, Sonoma State University, 1801 E. Cotati Ave., Rohnert Park. $20-$80. 546-8742. santarosasymphony.com.
Saturday, May 3
Robotics Challenge: Students in 4th through 8th grades will demonstrate the small robots they have been contracting over the past several ears, competing in an event that involves over 300 students. The public is invited to witness the teams go through seven events, utilizing skills in math, science, and engineering through robotic activities. The event is from 9 a.m. to 2 p.m. at Elsie Allen High School, 599 Bellevue Ave., Santa Rosa. Info: www.scoe.org