We've been following Scarlett Johansson's music career because she covered Jeff Buckley, Tom Waits (with Dave Sitek), and because other reasons. Her latest endeavor is the Break Up LP, a set of Serge Gainsbourg/Brigitte Bardot-inspired duets with Pete Yorn, which so far has turned up the surprisingly effervescent and playful ditty "Relator." It's spelled terribly, maybe to help with its ...