The pop star said he was leaving behind his "arrogant" and "conceited" attitude.
An unnamed "old school" female singer will show up as a surprise performer in addition to Perry and rocker Lenny Kravitz.
And this mashup proves it.
The rocker graciously chalks up the similarities between "I Won't Back Down" and "Stay With Me" to a "musical accident."
You can't use "This Sick Beat" or "Cause We Never Go Out Of Style" without the pop star's permission.
The breakout star's debut record, "In The Lonely Hour," is nominated for Album of the Year.
The music icon has teamed up with "True Blood" creator Alan Ball, to produce a new show called "Virtuoso."
The pop star said her accounts were hacked but the rogue posts were quickly removed.
Harry Styles and Meghan Trainor channel their heartbreak into a new song called "Someday Maybe."
The most-watched 12 minutes on U.S. television is expected to be all about the ladies.
The "Kiss Kiss" hitmaker was slated to kick off his tour tomorrow, but now it has to wait.
Tom Petty "Won't Back Down" over the similarities between his 1989 hit and the Grammy-nominated "Stay With Me."
The "American Idol" winner wants to be released from recording and merchandising deals linked to the TV talent show.
The singer is believed to have lost documents while in the San Bernardino County Jail last year.
The" Rolling In The Deep" singer will kick off the shows after the release her long-awaited third album.
The "Happy" hitmaker and the famous Vivienne Westwood hat he wore to the Grammys are heading to Springfield.
The debut album "Title" knocked Taylor Swift from her three-week perch atop the weekly album chart.
One sings about being "Happy," the other croons about being sad, but they're both headed for the Grammys.
The surviving members of TLC are hitting the road with New Kids on the Block and Nelly for an all-star summer tour.
The "Baby" hitmaker will celebrate his 21st birthday by becoming the butt of all jokes.