ContactMusic — Katy Perry fell out with Calvin Harris after he pulled out of her tour. The 'Firework' singer posted an upset message on twitter to confirm the Scottish dance musician will not appear as planned at the UK and Ireland dates of... more info

MTV.co.uk News — Katy Perry's alien inspired promo for her new single E.T. will premiere on MTV US this Thursday.The video, which also features Kanye West, will get its on-air preview at 7.53pm EST and will be... more info

ContactMusic — Russell Brand has confirmed he's in talks to join the cast of upcoming movie musical Rock Of Ages, but will only sign on if the filming schedule allows him enough time to spend with his wife Katy Perry. The British funnyman... more info

Gigwise — After DJ cancels his support slot... more info

Yahoo! Music UK — world entertainment news - Katy Perry and Calvin Harris have launched a bitter war of words on Twitter.com after the Scottish DJ cancelled his supporting slot on the singer's tour at the last minute. more info

ContactMusic — Katy Perry and Calvin Harris have launched a bitter war of words on Twitter. com after the Scottish DJ cancelled his supporting slot on the singer's U. K. tour at the last minute. The Girls hitmaker was due to open Perry's shows... more info

Altsounds — Following a week of alien abductions on \//\ KATY PERRY //\// ET33111 (http://katyperry.com) and all her digital properties, Katy Perry's “E.T.” epic sci-fi music video (featuring Kanye West) will descend upon the masses. The music ... more info

Popeater — Filed under: Music News, Katy Perry, Russell Brand Katy Perry's mother, Mary Perry Hudson, is speaking out against her daughter's racy style in a book proposal, reports Page Six. Hudson, an evangelist, has been shopping a book proposal about how h... more info

Unreality Music — Katy Perry’s mother believes she could be a preacher. The ‘Teenage Dream’ singer’s parents Mary and Keith Hudson - who are both Christian pastors – have conflicting feelings about he... more info

Big Apple Music Scene — What's your biggest guilty pleasure, Katy Perry's "Firework" or a sugary sweet Hostess Snowball? If pop music is like junk food, then these artists are totally meta. Check out our gallery of musical superstars who resemble delicious treats. ... Mor... more info