"Roar" is a popular song by American singer Katy Perry. It was released as the lead single from her fourth studio album, "Prism," in 2013. The song was written by Katy Perry, along with Max Martin, Savan Kotecha, Bonnie McKee, and Dr. Luke. "Roar" was a commercial success, reaching number one on the Billboard Hot 100 chart and topping the charts in several other countries. The song's empowering lyrics and catchy melody make it a pop anthem.