Jimmy Page, Robert Plant, and John Bonham of Led Zeppelin, in 1970. A new lawsuit says the group borrowed from another band's work without crediting it, for the huge hit "Stairway to Heaven."
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Pharrell Williams, center, performs "Happy" during the Oscars at the Dolby Theatre on Sunday, with the help of dancers who attend an L.A. high school (they're dressed in pastel colors).
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