Some twenty years after his death, it's still difficult to separate Serge Gainsbourg's outsize public persona from his music. Even casual fans, be they real or the precocious protagonists of films like Youth and Revolt and the recent Submarine , tend to use the playing of Gainsbourg tunes, their conspicuous appreciation of the chain-smoking Frenchman, as shortcuts to cool. Such fans, who might enjoy a spin of pop classics like "Bonnie and Clyde" or "Ford Mustang," probably don't realize the breadth of Gainsbourg's musical output. Starting within the fairly polite parameters of the French chanson - a tradition that he didn't take for a spin on the dance floor so much as hustle out into a dark, rain-glistening alley and have his way with - the man born Lucien Ginsburg went on to compose some of the pop/rock tunes for which he is best known, to work in jazz, calypso, funk, reggae, electronica and seemingly every genre known to man. This in...