This year marks the 35th anniversary of his death after a drinking session in London. Head tells Classic Rock's Rod Yates: "The very first time I met Bon he was a worker, mowing lawns and picking up rubbish. He'd work really hard, fast and efficiently - I thought, 'Wow, this guy has got direction in his life.'

"You could see he wasn't your average person, no matter what he did. He also had a sense of humour. He'd be cracking jokes and doing funny things. He worked hard, he was funny and he had a good sense of ethics."

Head remembers how Scott went out of his way to find unusual ways of doing things. "If there was as staircase he wouldn't walk down the stairs, he'd slide down the bannister. That sense of being a clown stayed with him - it's one of the main things about AC/DC.