When you start hearing names like Norton Buffalo, Charlie Musselwhite, Watermelon Slim, Fingers Taylor, Lazy Lester and, yes, a man named Magic Dick, it can mean only one thing: the Blues Harmonica Blowout is back! Since 1991, founder Mark Hummel has been producing and performing at this oftentimes sold-out show. Joining Hummel onstage this year and paying tribute to the late, great Little Walter are Corky Siegel, James Harman and Little Charlie along with the Blues Survivors. Surround yourself with the bluesy sounds of the mouth harp on Thursday, June 27, at the Napa Valley Opera House. 1030 Main St., Napa. $27—$30. 8pm. 707.226.7372.