Katy Perry's 'Roar' Debuts on Pop Songs Chart, Heading for Hot 100 – Billboard

To no one's surprise, Katy Perry's new single "Roar" is off to a roaring good start. The song leaked prematurely to the Internet on Saturday, Aug. 10 -- two days before its planned premiere today (12).

Looking back at Katy Perry's iconic career - The Post

Sara Bareilles Doesn't Think Katy Perry's 'Roar' Steals From Similar-Sounding 'Brave' – The Hollywood Reporter

Miley Cyrus' 'Wrecking Ball' Is No. 1, But Is It A Real Hit? : The Record : NPR

Katy Perry Makes Hot 100 History: Ties Michael Jackson's Record – Billboard

Katy Perry's Prism Album Debuts At No.1, Fifth Harmony Follows

Who will be this fall's Pop Princess?

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Katy Perry and the Decline of the Music Video, by Allen Lu

Katy Perry's Pop Songs Chart Reign Continues With The Rise Of 'Roar