Billy Joel has undergone brain surgery for normal pressure hydrocephalus, a buildup of fluid in the skull. He was originally very reluctant when doctors said they wanted to drill into his brain, but reconsidered when he realized it could improve balance and memory. Joel said that the surgery has "actually improved things".
He still doesn't know when or if he'll return to performing, but he says "I'm not going anywhere. I'm here. I'm still here."






