Mark Hummel's Blues Harmonica Blowoutâ„¢ started on a Sunday night in 1991 at Ashkenaz in Berkeley with four harmonica players - Rick Estrin, Mark, Dave Earl and Doug Jay. Each player performed a twenty to thirty minute set and everyone jammed together with Hummel's Blues Survivors as backup. Over the next five years it grew to become a multi venue event around California and included bigger names like William Clarke, Norton Buffalo and Paul DeLay. By the year 2000 the Blowout was headlining Yoshi's in Oakland as a four night show with Rod Piazza, Kim Wilson, Rick Estrin, James Harman and Billy Branch. These shows were recorded for Mountain Top Records.
Since then it's become a who's who of older and younger players, black, white, male and female, national and international. From icons like Snooky Pryor, Carey Bell, James Cotton, Charlie Musselwhite, John Mayall, John Hammond, Little Sonny, Lazy Lester, Billy Boy Arnold, Sam Myers, Corky Siegel, Magic Dick, Huey Lewis, Lee Oscar, Jerry Portnoy, Howard Levy and Paul Oscher to younger players like Sugar Ray Norcia, Jason Ricci, Son Of Dave, Aki Kumar, Curtis Salgado, Kenny Neal, RJ Mischo, Sugar Blue, Annie Raines, Carlos Del Junco, just to name a few.