Guesting on All Access Live, drummer Vinny Appice (Dio, Black Sabbath, Heaven And Hell) looked back on the recording sessions for Dio's iconic debut album from 1983, Holy Diver.

Appice: "We wrote in a room together in Sound City (in Los Angeles, CA). Sound City, across the parking lot, they have three rehearsal rooms, and that's where we rehearsed and wrote this stuff. And writing, we'd come there, jam. 'Rainbow In The Dark'... I think I just started a beat, and somehow that chord, in the beginning, got in there, where I recorded everything on cassette, and so did Angelo (Arcuri), who was the engineer for Holy Diver, he was always in the room with rehearsals and all that. That's how all this stuff came about, jamming - smoked a lot of dope I did, and Ronnie, and Jimmy (Bain / bass), Vivian (Campbell / guitar) not so much, he just got a contact high in the room. But that's how that shit was written, and then we'd listen to it and go, 'That's cool, let's put it together.' The next night, we put it together.

There was one riff we jammed on one night, and then we came in the next night; we always started at 7:00pm, we didn't do the day thing. So we come in and go, 'Angelo, play that riff we played on the cassette.' So he played it, but he put the cassette in upside down. It was a Tascam, so it plays backward, so it started playing backward, and we're like, 'Oh, shit, you're fucking stoned.' And then we were, 'Wait a minute, that sounds really good...' We learned the riff backward, and that's in the song called 'Invisible.' We said, 'This is cool, let's put it together with the riff that goes forward,' it's backward, and we put it together, and it worked.

It was just open creativity, anything worked. There wasn't a negative word used in those sessions at all. We were having fun and just having a crack up."