Featuring Sonoma’s ragtime king John Partridge & the Jack London Piano Club. Attendees are invited to dress in early to mid-1900’s costume but not required. Refreshments served during intermission. Seating limited. $20 per person & includes parking. 2–4 p.m. House of Happy Walls Museum (2nd floor). Jack London State Park. 2400 London Ranch Rd., Glen Ellen. Tickets: tinyurl.com/mt7as3pf.