In 1995, the head-trauma wing at a nursing home in Bensonhurst began acquiring the lost memories of Def Jam's first rapper. Terry Keaton, a new patient at Haym Salomon hospital, had emerged from a coma unaware that he was T La Rock. Or that T La Rock had a hit in 1984 called "It's Yours." All of this was news to Keaton, as it was to neurologists. What was known is that the history of T La Rock — and perhaps the time of his life — had been purged from Terry Keaton's mind with a blunt instrument.