Katy Perry's 'Electric' Bolts to #1 on Worldwide iTunes - That Grape Juice
Katy Perry Charts (@perryscharts) / Twitter
Katy Perry | full Official Chart History | Official Charts Company
Top Music Universe Awards в Twitter: „Wow! #NeverReallyOver by Katy Perry has debuted at #1 on iTunes Worldwide Songs Chart! Congratulations, @ KatyPerry! https://t.co/TvDqdfvp4R“ / Twitter
Katy Perry on Apple Music
Katy Perry's new album Witness faces stiff competition from Ed Sheeran, Hillsong Church, London Grammar on iTunes | PerthNow
Katy Perry's 'Never Worn White' Tops YouTube, iTunes Charts in 20+ Countries - That Grape Juice
Firework (song) - Wikipedia
The Guild's 'Game On' Tops Katy Perry's 'California Gurls' on iTunes
Download Katy Perry's “Witness” From iTunes – SPY
Katy Perry unveils 'Roar' video – watch
Katy Perry's albums and songs sales - ChartMasters
Katy Perry Europe - #CHARTS iTunes Worldwide 🌎 Never Really Over is now #1 !! CONGRATS Katy Perry 🧡#NeverReallyOver | Facebook
Katy Perry Surges During Post-Holiday Lull – Rolling Stone
Katy Perry's "Witness" Reaches #1 On US iTunes Sales Chart (Update)
Watch: Katy Perry Delivers First 'Daisies' Live Performance as Song Hits #1 on iTunes - That Grape Juice
Katy Perry, iTunes Festival 2013 - Irish Mirror Online
Pop Updates - Katy Perry — #1's on iTunes US: | Facebook
