Idolator — The historically rock festival goes pop. more info

Consequence of Sound — Radiohead, Foo Fighters, Katy Perry, The National, Lorde, The xx, Phoenix, Justice, Barry Gibb, and so much more. more info

Nialler9 — Emily Eavis today tweeted out the first big lineup for Glastonbury’s Worthy Farm this year and it includes names we already know (Radiohead, Foo Fighters, Ed Sheeran) and names we don’t: the xx, Katy Perry, The National, Chic, Barry Gibb (B... more info

MSN Music — Katy Perry paid tribute to an 18-year-old superfan who tragically died in a car accident the best way she knew how, by changing her Twitter name to #ripkatycatKatie in honor of the fallen teen, Katie Bell. more info

PopSugar — Katy Perry is single again after calling off her yearlong relationship with Orlando Bloom, and the breakup got us thinking about the other men who have stolen the sexy singer's heart over the years and inspired a few of her hit songs, too. From her e... more info

Stereogum — Elton John celebrated his 70th birthday in style last night. Katy Perry, Jon Hamm, James Corden, and more attended his party at Red Studios Hollywood, which also served as a celebration of the 50th anniversary of his partnership with songwriter Berni... more info

The Daily Mail — Katy Perry and Heidi Klum celebrated Elton John's 70th birthday bash at the Hammer Museum in Los Angeles in full style on Saturday night, leading the star-studded crowd at the English icon's reception. more info

CNN Showbiz — It's been some time since their split, but Katy Perry is still John Mayer's muse. more info

USA Today Music — Mayer and Perry dated for a year and a half before splitting in 2014.             more info

Jam! Showbiz Music, Canada — John Mayer cried as he channelled his heartbreak over his split from Katy Perry into his new single Still Feel Like Your Man. more info