Apashe uses different vocalists for different tracks but it's always hip hoppy as you put it.
His modus operandi seems to be that he writes the music and has guest hip hop artists bring their own flavor to the vocals and he tries to rotate them as much as possible to keep things fresh.
He also seems to travel the world to collaborate with vocalists from different countries.
the music usually only has a slight hint of Orchestra to it but in this track he went all out because it was meant to be over the top.
basically Apashe is all about mixing and matching different stuff.
my preference for vocals is that there either should be none ( instrumental ) or it should be beautiful female vocals, or it should be rap / hip hop.
i don't need to hear dudes singing. that shit is gay.