Ear Worm: Steve’s song of the day

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Every day we’ll share with you the song we can’t get out of our heads. Today it’s Katy Perry’s “Roar.” Why? All week we’re asking listeners call and sing a line for the Katy Perry Hilton Chicago “Chillcation” Sing-off. Win a weekend in Chicago or just unleash your inner tiger. And then just TRY to stop humming it.