The Big Mama-Jama Jamathon Pledge Campaign.

Guitar virtuoso Steve Vai will host and serve as the musical director for “The Big Mama-Jama Jamathon,” a 52-hour long open musical event that takes place Sept. 28-30 at Musician’s Institute’s new venue LiveHouse in Los Angeles. Order exclusive merchandise, CDs, vinyl, unique artwork and more to support this worthy cause! Check out details and purchase tickets for the event at