Mashup artist Rench has released a free album of "gangstagrass" music -- hiphop mashed with bluegrass.

Introducing block rockin' honky-tonk, New American music for the 21st century, built with love in a little studio, hand crafted, running on inspiration and imagination and duct tape, calling on the spirit of Gram Parsons and Otis Redding and KRS-ONE and Dolly Parton and Nina Simone and Willie Nelson and Missy Elliott and Johnny Cash, to write about what we feel and play what our hearts tell us, because to make it happen is reason enough, and to share it with the world is all the reason you need, because we tell the truth with music and the truth is beautiful.

http://www.gangstagrass.com/

According to http://en.wikipedia.org/wiki/Gangstagrass :

"Gangstagrass (...) combines authentic bluegrass and rap into a new genre." Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.