One Direction

From Grimes to Madonna to Joanna Newsom, these are the albums that defined our 2015.

One industrious soul has made the Haylor Mashup to Rule Them All and we, the internet, thank him/her.

Harry needs to wear a helmet when he performs.

One Direction dropped their new music video for "Drag Me Down" in the middle of the night. Again.

Revenge was a dish served on stage.

Zayn Malik pulled out of upcoming One Direction performances due to "stress."

One Direction's very own Harry Styles sent some very good well wishes to a local teenager fighting leukemia.

What happens when you put the world's biggest boy band in ugly Christmas sweaters, hand them toy instruments and shove them into a closet with a late night host and The Roots?  You get one of the coolest renditions of 'Santa Claus is Coming to Town'...

I've always loved 'We Are The World' type music collaborations.  'Do They Know It's Christmas', 'What's Goin' On', etc.  A re-recording of the Beach Boys' 'God Only Knows' has brought together everyone from Pharrell Williams, to One Direction, to Coldplay.  See who else you can spot in this video, which benefits the charity Children in Need.

How would you react if your favorite artist popped up out of nowhere to give you the surprise of your life?

One Direction's first single from 'Four,' 'Steal My Girl,' doesn't drop until Sept. 29 -- but you can listen to the first clip of the song right here!

One Direction has beefed up security for their tour of South America under threat of a possible kidnapping attempt.