Katy Perry Tops Taylor Swift on Forbes' Highest-Paid Women ListPerry raked in an estimated $135 million.
Watch U2 Perform 'Ordinary Love' with Lady GagaGaga played piano and sang.
Lady Gaga Covers Van Halen's 'Panama' with a Few Friends: WatchLady Gaga and her pals the Dirty Pearls joined forces in New York to take on the Van Halen '80s classic.
Lady Gaga's Tour with Tony Bennett Will Be Classy, with a Gaga TwistLighting designer LeRoy Bennett says there is one word for what Gaga's 'Cheek to Cheek' Tour with Tony Bennett will look like: sophisticated.
Lady Gaga's Cover of John Lennon's 'Imagine' Is a DelightGirl can sang, but you already knew that.
Paul McCartney Has New Songs, Collab with Lady Gaga Set for 'High in the Clouds' SoundtrackPearl Jam guitarist Mike McCready is also said to be involved in the soundtrack for the film adaptation of McCartney's 2005 children's book.
What David Letterman & His 'Late Show' Meant to MusicDavid Letterman was your taste-maker older brother who shared his favorite music nightly like a perfectly curated mixtape.
Madonna Has a 'Plan' to Get Everyone to Stop Asking If She & Lady Gaga Hate Each OtherWhat's that plan? Stay tuned.
Paul McCartney & Lady Gaga Are Working on a (Not So) Secret Project TogetherLady Gaga posted a photo with Sir Paul teasing a 'secret' project. Not so secret anymore Mother Monster.
Ariana Grande, Lady Gaga, the Band Perry, John Legend Added to Stevie Wonder GRAMMY TributeThe Band Perry, Ariana Grande, Lady Gaga and John Legend will perform during the GRAMMY homage to Wonder, which airs Feb. 16 on CBS.
Lady Gaga & Tony Bennett Added to List of 2015 GRAMMY PerformersThe jazz duo aren't the only couple hitting the GRAMMY stage next month. Hozier and Annie Lennox, Jessie J and Tom Jones, and Adam Levine and Gwen Stefani will also perform together.
New Orleans Jazzfest 2015: Tony Bennett & Lady Gaga, Ed Sheeran, Elton John HeadliningThe festival announcement season has officially begun.