Why are we getting thesoundtrack one song at a time? Is this the musical equivalent of the teaser trailer leading up to the bigger trailer, which in turn leads up to the actual movie?Earlier, in preparation for Quentin Tarantino’s homage to spaghetti westerns, The Weinstein Company released the Rick Ross song “100 Black Coffins” from the movie’s official soundtrack. Next, RollingStone.com has an early listen to a James Brown/2Pac mash up “Unchained (The Payback/Untouchable)” which also will be featured on the movie's CD. It’s a brilliant hip-hop tune. Listen to it right here:Like a true cinematic deejay, Tarantino (and his musical collaborators) blend the two dissimilar tracks together to create a wholly original song that also weaves in memorable quotes from thescreenplay. This particular track was mixed by Tupac’s former engineer, Claudio Cueni. It ends with a quote I don’t remember from the movie, though there’s a LOT of dialogue in(it is a Tarantino film, after all) and it’s possible I just missed it.Thesoundtrack will be in stores in a little less than a week. It reaches shelves on Dec. 18, with the movie following up on Dec. 25. As you likely know, it stars Jamie Foxx as a free slave who joins forces with a bounty hunter (Christoph Waltz) to try and rescue his wife (Kerry Washington) from the clutches of a vicious plantation owner (Leonardo DiCaprio). It’s everything QT fans want. Pump up this track and enjoy.