Oscars 2015: How Winning Best Original Song Trophy Boosted Sales of 'Let It Go,' 'Skyfall' and More Past Victors

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The Oscars 2015 has a decent list of tracks up for Best Original Song—"Glory" by Common and John Legend,Glen Campbell's "I'm Not Gonna Miss You," Adam Levine's "Lost Stars," Rita Ora's "Grateful," and the "Everything Is Awesome" collaboration between Tegan and Sara and The Lonely Island—but how does a win affect sales of the song?