I apologyse, I have put a wrong data (City) of born...
So, I'll try to fix.
I think Water is Dominant in his way of expression. He has a dominant Pluto (on IC), though.
As emma proposed, Cancer rising would suite quite right. Its ruler Moon in the 8th house as ''problems'' with the mother figure, feeling of anger and ''revange'' towards her and his own past, ''obsession about''...
He is a very magnetic man (Mars in Libra). Mars in IVth house indicates also problems in his childhood and home. A source of his creativity is his memory about the childhood (Sun in the IVth house). Mars in detriment explaines also some aggressivity, expecially towards himself (ones he tried to suicide himself).
Neptun in 5th house of creativity explains his expression through the music and Mercury in the same house, his way of doing it (through the rap). A words, as he were 'talking', is his way of ''singing''. Rap is un unusual way of singing, do you agree? In Scorpio explains his anger in expressing thoughts about somethig.