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).

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

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

Katy Perry's 'Roar' Tops Robin Thicke's 'Blurred Lines' On Billboard Hot 100, Becoming Singer's 8th No. 1 Hit

Katy Perry's albums and songs sales - ChartMasters

Every No. 1 song of the 2010s ranked from worst to best

Alesso & Katy Perry 'When I'm Gone' Out Now - ENSPIRE Magazine

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

Roar (song) - Wikipedia

Katy Perry, Biography, Music & News

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

The Ones of the '10s: Katy Perry's “Dark Horse” (feat. Juicy J) – D'Orazi Hit Parade

Katy Perry 'Smile' Album Review

Katy Perry, Biography, Music & News

Katy Perry's albums and songs sales - ChartMasters

Katy Perry, Biography, Music & News