Complex sentence: Suffa also serves as producer and has produced tracks for a number of other hip hop artists in addition to his work within the Hilltop Hoods, he has been doing this for more than ten years.
Split into simpler sentences: Suffa also serves as producer and has produced tracks for a number of other hip hop artists in addition to his work within the Hilltop Hoods. He has been doing this for more than ten years.