And last night (November 9) he dedicated prison-themed track 512 to his attackers from the stage at the city's 3 Arena, saying: "I hope you get your f***ing heads kicked in."

Photographer Blythe says via Instagram: "I looked saw five or six teenage dudes, 16-18, in hoodies and track pants, spreading out around me. 'Well, crap, I guess it's on,' I thought.

"I started stepping quickly into the street, away from the cul-de-sac where I was - a bad spot to be trapped - trying to keep my eye on them at the same time.

"One kid drew up to my left, getting close, and blam - someone else hit me in the head from behind with something, a stick or whatever. I saw stars for a second."