For a much-needed reprieve from our twenty-four-hour marathon digesting In Rainbows‘ bonus disc, we took the opportunity to listen to some of the CDs we get in the mail. One album popped out because of its sheer bizarreness: the soundtrack for the CGIed version of Alvin and the Chipmunks. The cover depicts the digitally fleshed-out ‘Munks as, well, thugged-out ‘Munks, abandoning their trademark lettered shirts in exchange for Run-DMC’s wardrobe from the “My Adidas” era. But wait, it gets much, much stranger.

With their helium vocals, the Chipmunks painfully bust out window-shattering covers of Daniel Powter’s “Bad Day” (the song that accompanies farewell montages on American Idol) and disco favorite “Funkytown.” After that, the Chipmunks break out the hip-hop beats and — gasp — rap, with Alvin bragging about how “iced out” he is on “How We Roll.” The soundtrack also features the trio’s “classics” like “Witch Doctor” and “The Chipmunk Song (Christmas Don’t Be Late),” but remixed for the Now! That’s What I Call Music generation.

The film comes out December 14th and inexplicably stars Jason Lee as “Dave,” the Chipmunks’ naïve owner, as well as David Cross, who makes his return to the CGI genre after setting the screen ablaze in Small Soldiers. Bonus factoid: Justin Long, the dude from the Apple commercials (”Hi, I’m a Mac”) voices Alvin, albeit his voice is sped up. We will give the film credit for one thing, though, and that’s that they’ve shrunk the chipmunks down to actual chipmunk proportions instead of depicting them as wilderbeast-sized rodents like in the cartoon. It’s comforting to find some semblance of reality in a movie about singing chipmunks that overtake the music industry.