Katy Perry tops iTunes singles charts, nears Michael Jackson's Billboard record - syracuse.com
KATY PERRY STATS on Twitter: "11 years ago, Katy Perry released her 2nd studio album TEENAGE DREAM and reset the meaning of POP PERFECTION. https://t.co/q63qSU8w9C" / Twitter
Katy Perry Today on Twitter: "7 years ago today, @katyperry released “Dark Horse” ft. @therealjuicyj as the 3rd official single from “PRISM”. — Check out the main achievements: https://t.co/E6rdjIPB8H" / Twitter
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Stream katysbf | Listen to iTunes Festival: London 2013 - Katy Perry playlist online for free on SoundCloud
Katy Perry's 'PRISM' Party to Launch New iHeartRadio Theater in Los Angeles – Billboard
KATY PERRY STATS on Twitter: "The album “Smile” is receiving promotional banners on iTunes from several countries. #Smile https://t.co/Opf8uljtgO" / Twitter
Katy Perry Europe - #CHARTS iTunes Worldwide 🌎 Never Really Over is now #1 !! CONGRATS Katy Perry 🧡#NeverReallyOver | Facebook
Stream Katy Perry - Walking on Air (Live at iTunes Festival 2013) by CK | Listen online for free on SoundCloud
iTunesCharts.net: 'Witness' by Katy Perry (American Albums iTunes Chart)
Katy Perry's albums and songs sales - ChartMasters
Chart Data - “Smile” de Katy Perry sube al #25 en iTunes... | Facebook
iTunesCharts.net: 'Teenage Dream: The Complete Confection' by Katy Perry (American Albums iTunes Chart)
KATY PERRY on Twitter: "Guys we are really doing this! @PerryPrism_: @ katyperry #ROAR is slaying the iTunes chart in about 50 Countries! 🐯🐯🐅🐅 http://t.co/nBempfSFUj" / Twitter
Katy Perry Surges During Post-Holiday Lull – Rolling Stone
Katy Perry Lately! (@katyperrylately) | Songs, Katy perry, Girls talk boys
Walking On Air #1 on iTunes - Katy Perry - FOTP
The Guild's 'Game On' Tops Katy Perry's 'California Gurls' on iTunes
ITUNES US: Katy Perry - Rise 10 +3 - Charts - BCharts Fórum
Katy Perry | full Official Chart History | Official Charts Company
