The fourth annual MusiCares MAP Fund Concert is another big one, this time featuring Cat Power, a reformed Blind Melon (minus the late Shannon Hoon), supergroup cover band Camp Freddy, Aerosmith's Steven Tyler, Linkin Park's Chester Bennington, and Cheap Trick's Robin Zander. It's all in honor of rock legends Alice Cooper and Slash (both expected to perform), with proceeds going to the charity that helps down-and-out musicians pay for rehab. Floor tickets are going for a grand a pop, so the remaining balcony seats seem like a steal at $100.