23-year-old Trimbal - real name Javan St Prix - mixtapes offer an arena for him to test his creative boundaries. "I treat them as training," he says. "I'm not trying to make the best record in the world. What I'm doing is pushing myself, being different and seeing where that takes me. Mixtapes are all about challenging myself and experimenting. There are lots of sides to me, musically and as a person. This is a way for me to get all of that out there and show people what I can do."