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The Mad River Brewery Tasting Room has guitarist and prolific local producer Piet Dalmolen putting on a free solo show. Aside from providing production duties for too many talented local bands to mention here, playing lead guitar in Pink Floyd tribute supergroup Money and sitting in on many live jams and tributes in the area over the years, Piet is an extremely accomplished player in his own right, so expect a highly entertaining and well-executed set at 6 p.m. (free).

Oakland/Bay Area group The California Honeydrops bring its mix of soul, gospel-tinged blues and New Orleans second line-inspired street music to Humbrews tonight at 9:30 p.m. ($20, $17 advance). What started many years ago as a trumpet and drum busking duo haunting the East Bay's public transportation system has blossomed into a multi-horned, full rhythm sectioned, soulful party band whose main objective is connecting with the audience. To that end, the band encourages shout-outs and requests and will happily mutate their sets and songs into longer-form jams if the spirit of the crowd demands it. In other words, The Honeydrops subscribe to what American Football fans call the "12th man theory" of fan participation. So if you go, make some noise.