Jason Derulo Releases FIFA World Cup Anthem 'Colors'

"Selena did have a complication, too. A few hours after our surgery, I woke up and had a text from her that said, 'I'm really scared.' My kidney was very active, and when it turned I broke an artery," Raisa said. "They had to take her into emergency surgery and get a vein from her leg and build a new artery to keep my kidney in place. She could have died."

Gomez's operation was part of ongoing treatment for lupus, which compromises the immune system and vital organs. In October, she expressed her gratitude for Raisa's life-saving donation.

'My kidneys were shutting down. My mentality was to keep going," she told the Today show. '[Raisa] lived with me during this interesting time where my kidneys were just done. That was it, and I didn't want to ask a single person in my life. The thought of asking someone to do that was really difficult for me. She volunteered and did it. And let alone someone wanting to volunteer, it is incredibly difficult to find a match. The fact that she was a match, I mean that's unbelievable. That's not real."

It's a song close to the singer's heart, as it was inspired by his own proposal to fiancee, Gabi Duvall. "Me and [Duvall's] engagement song, and my brand new single 'This Is It' is available now," McCreery shared on Twitter. "Take a listen and let me know what ya think!!"

'In the last five years, I have grown from a teenager to a man, moved out on my own, lost my grandfather, proposed to the love of my life, and learned more about myself than I could have imagined," McCreery said in a press statement regarding his new album. 'This all shows up in the 11 songs on Seasons Change, and I cannot wait to share this music with my fans after such a long time between releases."

The Bleachers frontman produced the movie's soundtrack and co-wrote "Alfie's Song" with Harry Styles. Antonoff chatted with the talk show host about co-writing with Styles and working with Taylor Swift on her Reputation track 'New Year's Day."

"We wrote that song [ "New Year's Day"] in a second, because we didn't plan to write it. If you plan to write like a ballad or something like that, you always get a little bit less than you hope. We wrote that in and then the scratch take in my home, and then we played it."

He went on to explain that he only writes with one other person at any given time, so as to not be embarrassed. He likened the process to getting a physical.

The producer gave Fallon some tips so he could work on his own tunes by the next time they see each other, saying, "It's the same way people sing better when they're doing an impersonation. They're not scared. So if you sing a goofy lyric, you might come up with a great melody," Antonoff said.

The trio took turns combining various types of complaints, such as "angry Amazon review" with music to form new songs, to hilarious result. After the game, Ballerini performed her recent single 'I Hate Love Songs" with Rabbit Lightning (the hosts' fake country music group) as her backing band.

She shared the before and after shots of both her and her co-star Camila Mendes in her Instagram story, writing: "it's sad that you felt our bodies needed to be slimmed down."

Katy shocked her fellow judges-- not to mention the rest of America--that she's able to puff out her neck like a frog. A demonstration of her frog-tastic ability was enough to give fellow judge Lionel Richie quite the fright.

While the songs are decades apart, the singers seamlessly blend the percolating percussion of Timbaland's production on Aaliyah's track with melodies from "New Rules" to craft their thrilling new mashup of the two tracks.

Legend's wife Chrissy Teigen uploaded an adorable video to Instagram of John and Luna dancing to the song, as arranged by a tiny light-up bus toy. Teigen shared the video on the heels of news that the Legend family dog Puddy had passed away: "eyes still puffy from puddy tears but they [John and Luna] keep me happy," she wrote.

In both of the shared photos, the AT pop star is shown standing on a beach posing serenely, eyes closed, arms outstretched, seemingly at peace with the world.

"Aint No Love" really just came to me while I was in a studio recording an album that, parts of it, kinda saw the light of day for a minute, with my old outfit City of the Sun. Stuff was really bad between all the bandmates at the time, but everything was kinda crazy in a good sense. On one hand one of the bandmates was dating Lindsay Lohan, and that was not hurting our press that much... but myself and the other founder just couldn't seem to find a meeting ground, well no one had a meeting ground at that point is was absolute chaos, and the girl I was dating was just out of her mind on a level one could only be in LA.. She will proudly tell you she's the reason it's called LaLaLand, or at least she upholds the tradition.

Lots of fights with the band and just nights spent out walking around the parking lot of the motel that our Label had set us up in, while we were in the studio. I kinda sunk my way into a place where songs were just coming out because something had to. I was so numb and I think everyone was at that point that I could not even write songs with full sentences... which is great for radio. But we had been on the streets of NYC street performing for years at that point. Lost some good friends to drugs in the club scene, partied as hard as any wannabe musician at 23 in New York would and should, and we were broke the whole time. We slept where ever we could and had promoter friends so we never paid for drinks and then we busked every day and lived off of that. Sh*t was rough...

I finally recorded the song a couple years later and it just felt like it pieced itself together in the studio... like even the lingering notes at the end of the song were headphone bleed of the riff the second guitar plays in the verse. The producer Dave Weingarten was sitting at the board and I guess let the playback run and I heard that and had him stick it at the end and it is literally audio equivalent to the "cherry on top of the cake". The video for this song also just kinda fell into place so I dunno if I can even take credit for this whole fiasco.