He's rapped about everything from the meme rising of #donaldglover4spiderman to Inception. And now the amazing Adam WarRock has made a Firefly rap record, sampled from the scores of both Firefly and Serenity. It's big damn awesomeness. It's called "Browncoats Mixtape" — have a listen. Get the full album here.

[via Topless Robot]