I guess once you've sold millions of records, had countless number one songs, toured to sold-out arenas, all else there is left to do is get in a cartoon.

That is exactly what's happening to Brad Paisley tonight at 9pm as he makes a guest appearance on Comedy Central's long-running raunchy adult cartoon South Park.

Brad makes two appearances on the show. The first scene Paisley is introduced and sings the national anthem at a Denver Nuggets basketball game. Then later he duets with Cartman, one of the show's main character.

Here are a couple of photos that Brad tweeted about his trip to the show's studios.