This two-day charity music festival supports Heart to Heart, a Shanghai-based charity that provides corrective surgery for children with congenital heart defects. Twelve Shanghai bands ranging from punk to metal to hip-hop will headline throughout the weekend, including Must Be Red, Alpaca, Pinball City, Skinny OG & Queen Diamond, and Limousine. The show is free, but donations are accepted at the door, and raffle prizes throughout the weekend will raise further funds for the cause.