The Green Music Center’s summer performance series is in full swing this week, offering three great concerts over four days. First up is the wild-and-crazy banjo plucker Steve Martin performing with the Steep Canyon Rangers at Weill Hall on Aug. 20. The next day, Aug. 21, country bad boy and actor Dwight Yoakam delivers tunes off his latest record, Second Hand Heart. Online tickets come with a hard copy of the album. Two days later, Grammy-wining vocalist Colbie Caillat returns to the North Bay for a fun and endearing performance on Aug. 23; multiplatinum selling artist Christina Perri opens the show. Green Music Center, 1801 E. Cotati Ave., Rohnert Park. 866.955.6040.