As Friend Within, Mortimer's crafting bouncy house hits that simmer with self- confidence - he's not short of them. "Around 50 or 60% of my DJ sets are my own material. I've always stuck to playing what I want to play. If I'm booked to play somewhere, the promoter knows what I play, the audience know what I play. I've been booked to play the music I like." Let's be honest here, if you had weapons like "The Renegade" and "The Game" in your arsenal you'd be doing the same thing.