Katy Perry
Katy Perry's popularity has certainly risen and fallen over the years. One of her best eras was when she released the pop anthem "Roar" in 2013. While the radio listeners loved the song, not everyone was so keen on the new pop hit. Fans were actually the ones to call out the singer's positive title and lyrics as being strikingly similar to another pop artist of the year, Sara Bareilles' "Brave".
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