Hey, here's a mixing competition from Indabamusic.com. Genre is modern rock. http://www.indabamusic.com/opportunities/pensados-place-mixing-competition-rock
Apart from the "not real" drums, the raw tracks are pretty good quality. Unfortunately you'll
have to start with some heavy vocal submixing since half the 90+ tracks consist of vocals
I already submitted my own mix there
You've still got just under 2 weeks to submit your own mix there.
EDIT: Oops, the deadline is Jul 5, not Jul 13.