CNN Showbiz — It was the hottest ticket in town. Colin Farrell was there. So were Michelle Branch, Josh Groban and Chris Isaak. No, we're not talking about a Britney Spears or U2 concert. We're talking about a star-studded, invitation-only club show by Yusuf -- th... more info

MTV.com News — Perry co-wrote a pair of tracks on the 'American Idol' champ's new LP.By James Montgomery, with reporting by Kim Stolz Katy Perry Photo: Charley Gallay/WireImage We've already spoken to Katy Perry about her relationships with Rihanna, Josh... more info

VH1 News — We bring you more of our interview with Katy Perry, in which she addresses her friendship with Rihanna, the Zooey Deschanel comparisons and those Josh Groban rumors. more info

MTV.com News — Nothing was off limits in our first sit-down interview with the 'I Kissed a Girl' singer.By James Montgomery Katy Perry Photo: MTV News MTV News had been trying to sit down with Katy Perry for months — at the Grammys, during South by Sou... more info

Perez Hilton — We hope Clay Aiken got an advanced copy! Turns out his baby momma's brother, David Foster, will soon be releasing an autobiography about his life. David is a music producer who's worked with Celine Dion, Katy Perry's boyfriend, Josh Groban, and every... more info

All About Jazz — Musicians Linda Ronstadt, Josh Groban and Wynton Marsalis recall their experiences with music before a House panel in hopes of raising the budget for the National Endowment for the Arts to $200 million. A woman held a BlackBerry over the crowd sur... more info

MTV.co.uk News — Josh Groban and Katy Perry are not dating- according to his publicist.   Showbiz blogger Perez Hilton (who is a friend of the Hot N Cold singer) this week announced that the singers had... more info

VH1 News — Katy Perry and Josh Groban are just "very close friends," according the popera singer's rep, despite Perez Hilton's report that the two dating. more info

MTV.com News — Groban's rep denies relationship rumors, calling the singers 'very close friends.'By Jocelyn Vena Katy Perry Photo: Mike Marsland/ WireImage Earlier this week, Perez Hilton reported that Katy Perry was dating Josh Groban. Well, apparently ... more info

Jam! Showbiz Music, Canada — Josh Groban has dismissed rumours he's dating pop sensation Katy Perry - insisting the pair are just friends. more info