Sammy Hagar, John Mayer, James Hetfield, Tommy Lee, and more perform “Piece Of My Heart“

An all-star lineup featuring Sammy Hagar, John Mayer, James Hetfield (Metallica), Melissa Etheridge, Pat Monahan (Train), Tommy Lee, Kris Kristofferson and Joe Satriani perform, “Piece Of My Heart“ at the landmark Fillmore Theatre in San Francisco for the annual Acoustic-4-A-Cure Concert on Rock & Roll Road Trip! Watch the full episode here: Find AXS TV on your TV -- Subscribe to AXS TV on YouTube -- Download the AXS TV App Today! -- #SammyHagar #JohnMayer #JamesHetfield #Metallica #MelissaEtheridge #PatMonahan #Train #TommyLee #MotleyCrue #KrisKristofferson #JoeSatriani #PieceOfMyHeart #Acoustic4ACure #Rock&RollRoadTrip #RockAndRollRoadTrip #FillmoreTheatre #SanFrancisco