new song

Lady Gaga is not about to be one-upped by Katy Perry. The two pop stars were both victims of hackers and leakers who released their highly anticipated music to the masses early, so Gaga responded to the hype by sharing her song in full on her own to her beloved Little Monsters -- who were trying to steal the thunder from Perry's 'Roar' as best they could.

Nick Jonas got a new tattoo; he also shared the lyrics to 'What Do I Mean to You,' but left off the name. So who is the girl he is talking about?

Katy Perry dropped the fourth (and final, we think) 'ROAR' teaser today (Aug. 9) so it's 'ROAR 4.' In it, we hear MORE MUSIC...with vocals!

RAWR for 'ROAR!'

Katy Perry lights it up in the video teaser for her new single 'Roar.' Or 'ROAR,' as was rumored when some sort of fake press release was issued. The "it" being incinerated is the wig from her 'Teenage Dream' album cycle, which she promptly set on fire. No hesitation. No emotion.

Last year, TLC’s surviving members, Tionne 'T-Boz' Watkins and Rozonda 'Chilli' Thomas, announced plans to work on a new album. Now, they’ve revealed that Lady Gaga co-wrote one of the tracks. We were already stoked to hear their new music, but now we’re super pumped!

Demi Lovato contributed the song 'Heart by Heart' to the soundtrack of the movie 'The Mortal Instruments: City of Bone,' which is out Aug. 20. Consequently, that's the singer's 21st birthday.

Bonnie and Clyde are back on the lam! Jay-Z revealed the lyrics to yet another song on his upcoming album 'Magna Carta Holy Grail' -- and it is a follow-up to '03 Bonnie & Clyde,' which will feature his No.1 partner-in-crime -- Beyonce!

This is the breakup that just won't end. Even though Taylor Swift and John Mayer haven't been together for over three years, they keep fueling the gossip fire by writing songs about each other.

If we had to sum up Ciara and Nicki Minaj's new track 'I'm Out' in three words it would be: Get. It. Girls. The song, which will appear on Ci's upcoming self-titled album, is due out on July 5.

David Guetta, fresh off his win as Top EDM Artist at the 2013 Billboard Music Awards, shows us why he is the best in the business with his remix of Empire of the Sun's 'Alive.'

It's Britney, kids! Spears' new song 'Ooh La La' has leaked and we are refraining from using Brit's typical intro with the b-word, since her new track is all for the children!