Serge Gainsbourg emerged from the French chanson tradition embodied by Jacques Brel's gloomy "Ne me quitte pas" (Don't Leave Me), but early on he played cool jazz like Miles Davis' "Blue in Green." Haunting Nancy Sinatra and Lee Hazlewood country duets like "Some Velvet Morning" undoubtedly stimulated his memorably steamy collaborations with Brigitte Bardot and Jane Birkin.