Rudeboyz are the South African duo producing Gqom, the steel-cladded, drum-pounding music straight from the Durban townships.

If you're after an idea of what music in the city sounds like, Massive Q, Andile-T are the guys to give you a lesson. The music they make - smacking, stripped back, tribalist beats - sums up the movement and it's no surprise 'Gqom' translates to 'bang' or 'hit'.