Uli Jon Roth: “For me, the heavy metal direction was boring. I wasn't interested in it. I wanted to go in almost the opposite direction”

The German virtuoso on how feeling in “musical no man’s land” led to his decision to leave Scorpions in 1975, and go on to spearhead a new style of neoclassical guitar – and what he thinks about Kirk Hammett quoting his solos in Metallica’s Battery