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 Ties For Most Pop Songs No. 1s – Billboard

Katy Perry previews new album 'Prism' at NYC event – The Denver Post

Roar widens its lead at No. 1, while Lana Del Rey and Drake also move up: ohnotheydidnt — LiveJournal - Page 2

Citi Sound Vault Presents Katy Perry Live at The Theatre at Ace Hotel Los Angeles

Katy Perry, Biography, Music & News

Roarin' Tracks: These Are Katy Perry's Top 10 Billboard Hits

Katy Perry Launches New Label Metamorphosis Music, Signs Ferras

Katy Perry, Biography, Music & News

Katy Perry's New Single, 'Roar', Leaked Early. When Will It Dethrone 'Blurred Lines'? - Bloomberg

Dave's Music Database: September 2013

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

Katy Perry's 'Roar' knocks 'Blurred Lines' out of No. 1 spot

Katy Perry previews new album 'Prism' at NYC event, News