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Ryan Tedder has written some of pop’s biggest hits, including Beyonce’s Halo, Ed Sheeran’s Happier and, for his own band OneRepublic, Counting Stars.
But he says pop is in danger of being stifled by the rise in copyright cases.
“It’s a conversation in every writing session,” he tells the BBC.
“The odds of getting sued in this day and age are so high, we’re going to get to a point where nobody can write anything – because everything will be derivative of something else.
“It’s just ludicrous.”