Hebert Amorim was eight when he got his first taste of funk carioca (Rio funk): a pirate CD by Mr Catra, a favela MC famed for his ferociously explicit verses about gangs, guns and sex.
“My mum caught me listening to it and went mental,” said the 30-year-old visual artist from Senador Camará, a hardscrabble corner of west Rio de Janeiro where police fear to tread.