Southern Hip Hop. Basically rap with bluegrass beats. Much better lyrics than most hip hop out there. This is one of the three main channels I listen to and I found a ground of white boys from Australia called Hilltop Hoods. I love their stuff. If you enjoy hip hop at all, Gangstagrass is well worth the listen. Also if you have watched Justified, the theme song is by Gangstagrass. That's how I came about the station on Pandora.
My two favorite channels are Red Hot Chili Peppers and Bluegrass. Pandora gives you back what you put in to it, so I make sure to like songs, dislike songs and add variety. My RHCP station is three years old and I have liked over 150 songs. I get music from them, Weezer, Green Day, Nirvana, Bush, CCR, Skynard, Pink Floyd and the Doobie Brothers. It is a great variety that captures most of the music I like. My Bluegrass channel started as generic bluegrass, but I have tweaked it over time. I get lots of Flatt and Scruggs, Allison Krauss, and several newer contemporary artists like Dan Tyminski who I really like. I also have an Eagles channel since my dad likes them. I play it when I make Sunday dinner. It has a lot of great tunes as well.
Here is some Gangstagrass from their album Rappalachia...
[video=youtube;ezRhtnWWUUc]https://www.youtube.com/watch?v=ezRhtnWWUUc[/video]