In the fall of 1978, Neil Young's rather prosperous '70s came to a heartrending halt when his son was born with cerebral palsy. Neil coped, as he puts it, by "shutting it down totally." Wife Pegi coped by co-founding the Bridge School in Hillsborough, a nonprofit dedicated to helping children with severe impairments. Since 1986, the Youngs have curated annual concerts to benefit the school. As a practice, but certainly not a rule, participants perform with acoustic instruments. This year's diverse event will feature, among others, Jimmy Buffett, Sheryl Crow, Fleet Foxes, and supergroup Monsters of Folk — comprising My Morning Jacket's Jim James, Conor Oberst, and Bright Eyes' Mike Mogis.