Curtain Call host Charles Sepos chats first with representative artists of the 20th Annual “Art at the Source” open studios, this weekend and next, all around west Sonoma County.

Next, Guy Davis previews his Saturday evening performance “Blues on the Porch” with Charlie Musselwhite and Elvin Bishop, and his Sunday “Blues Brunch” for Healdsburg Jazz Festival.

Next, legendary conductor Charles Dutoit talks about his Thursday evening performance with San Francisco Symphony at Weill Hall, as well as his Davies Hall performances through June 7th.

Finally, political humorist Will Durst holds forth on illogical and absurd aspects of politics, leadership, and human behavior, and his new solo show “BoomeRaging: From LSD to OMG,” June 5th and 6th at Cinnabar Theater.