"Roar".

"Roar" is a power pop song sung by American pop singer Katy Perry. The lyrics and music score were created by Katy Perry and Bonnie Maggie, and were written by Max Martin, Music production was provided by Dr. Luke and Henry Walter. As the first single to promote the album, the song was released through Capitol Records on August 10, 2013. It was included in Katy Perry's third album "Prism", which was released on October 22, 2013.

Creative background:

"Roar" is a song written by Katy Perry for herself. She said that she is a person who hates keeping things in her heart and cannot She will be annoyed by the outburst behavior. Since the release of her last album, Katy Perry has tried many ways to heal herself, and this song was written to heal her emotional pain.

On the single cover, Katy Perry did not use the blue wig style from her second album. Katy Perry said that sometimes change is difficult, but evolution and change are very important for an artist. She felt that she needed a new image that was neither too cartoony nor too caricature, but one that was more about herself.