Grace Slick was born in 1939, so she was among the oldest of her cohort already in the Sixties. She’s one of the strangest things about pop history for me, right up there with Debbie Harry being over thirty when Blondie hit it big, and Stuart Murdoch being accepted by Glasgow hipster circles well into his late 30s. Pop music is so youth-centered, and that youth audience has often been highly suspicious and deprecating of people much older than them, that it baffles me that these performers still flourished.