I lived in Peru for a while. Check out CDs by Gabriel Alegria. He's a trumpeter and his music is a nice fusion of jazz with some traditional peruvian harmonies. And while you're in Lima go to Dos de Mayo. Be careful and watchful while you're there (it's not the safest part of Lima). It's a whole section of Lima with like a hundred music stores all in the same place - a great way to spend a day or eight. Have fun!