Dave Shul and Stefanie Keys

Petaluma singer Stefanie Keys and San Francisco guitarist Dave Shul will team up for an evening of acoustic duets from 7 to 9 p.m. Wednesday, Jan. 30, at the Aqus Cafe, 189 H. St., in Petlaluma.

Keys has performed as lead singer with Big Brother and the Holding Company, once fronted by Janis Joplin. Shul toured with Michael Franti and Spearhead for 14 years, and has performed with Counting Crows, Billy Preston and Dave Mathews.

No cover charge.

Information: (707) 778-6060; www.stefaniekeys.com