Dieter "Didi" Zill first made noise before he ever started freezing it—back in 1965 he was out front with Didi & his ABC Boys on "Beat from Berlin" (German Beatles-flavored beat music), and in 1968 he pops up again with The Batmen for a Batman-craze single. By the 1970s he’s cutting his own singles and an LP under his name, and by 1969 he’s at Bravo, camera in hand, turning dressing rooms, airports, and backstages into evidence. I’ve always liked that double-life: musician first, then photographer—so when he shoots bands like Deep Purple and the wider hard-rock circus, he isn’t just watching the show, he understands the machinery behind it.