I bought the first Rainbow album back around 1975? - Ritchie Blackmore's first post-Deep Purple outing, and loved it. Of course, Dio was the new vocalist. He was perfect for the fantasy lyrics and heavy metal riffing. A great new rock legend was born. Rainbow Rising, the second album, was even better. Dio had found his sweet spot. He never looked back, I guess, but I didn't really follow his career after that. He was still belting them out at 67 years old! Some guys are never too old to Rock n Roll. I'm sure he'll live on forever as one of the second-generation heavy metal greats.