The Petaluma Arts Center will host its free Conversation Café from 2 to 4 p.m. Sunday, Jan. 15, with the spotlight on art in the community. It will be hosted by center director Virginia May at 230 Lakeville St.  Information: 762-5600 or petalumaartcenter.org .

International Folk Dance classes will be held from 7 to 9:15 p.m. at Hermann Sons Hall every Monday night through May 7. Learn authentic dances from Serbia, Romania, Turkey, Armenia, Bulgaria, Greece and Israel. The first of the weekly classes will be held Jan. 16. The hall is located at 860 Western Ave. Price is: $65. Information: (415) 663-9512.

The Petaluma First Church of Christ Science hosts an evening of duet harmony featuring Nell Robinson and Jim Nunally at 8 p.m. Saturday, Jan. 21. They’ll play original compositions, as well as material from Nine Inch Nails to Bill Monroe’s Texas swing. Nunally is a two-time Western Open Masterpicking and Guitar Champion. The church is located at 522 B St. (corner of B & Sixth streets). Admission is $19 at the door, $17 in advance. Information: petalumachurchconcerts.com or Lance Walker at 542-8995.

The Aqus Café screens the film, “Living Without Money,” at 7:30 p.m. Sunday, Jan. 15. It’s a 52-minute documentary tracing the life of German schoolteacher Heidemarie Schwermer, who decided to embark on a life expedited not by money, but by the exchange of favors. The cafe is located at 189 H St. Information: 778-6060 and www.aquscafe.com.

The Marchfourth Marching Band mixes band beats with funk, jazz and Creole fever at 8 p.m. Saturday, Jan. 21, at the Mystic Theatre. The annual Petaluma High School fundraiser will feature the PHS Jazz Band as the show’s opener. Doors open at 7 p.m. The Mystic is located at 21 Petaluma Blvd N. General Admission is $25. More info: 765-2121 or mystictheatre.com.

– Sheldon Bermont