She's got the eye of the tiger, and that's why Katy Perry‘s "Roar" music video has skyrocketed to 4 billion YouTube views, ...

Fans of Katy Perry and Lady Gaga are describing it as 'Roar vs Applause' all over again. The two fan-favorite singers released their respective singles in August 2013, igniting a notable pop culture ...

Find yourself singing along to Katy Perry every so often ... make your way to the stage at 9.30. And get ready to Roar, sing Dark Horse, dance to Firework, and so much more.