While you watch, stay with us at the liveblog for color commentary and up-to-the-minute coverage of everything that happens onstage -- and behind the stage, and in front of the stage -- plus fun interactive content including photos, video, polls, social media updates, and more. And, please: Comment! Tell us what you think of tonight's nominees and performers. I’ll keep asking, so you keep telling!
After we wrap, stay with us at GRAMMY.com for more official GRAMMY coverage, a complete 57th GRAMMY Awards winners list, photos and video from the show, and more.
Which artists will take home music's most coveted prize? Will it be a San Smith sweep, as some are predicting? Come back and find out! See you in a few.
Thanks, Tammy. Last, but certainly not least, we have our Official Special Guest Blogger Rita Ora in the house. Rita will chime in throughout the telecast with her comments and thoughts on the 57th GRAMMY Awards. We also have Jamie and Andreas in the "mosh pit," ready to bring you exclusive updates.
We have a ton in store so I hope you're settled in and ready for the kind of fun only the GRAMMY Awards can bring.
Now … are you ready for Music's Biggest Night?!
Just a minute to go, everybody, and if you’ve been following the buzz you know you’re in for a heap of A-list performances. The show always starts with a bang, and I have a premonition that this year’s is going to be especially loud.
GRAMMY Fact: This is AC/DC's first time performing on the GRAMMY stage! But the rock veterans are no strangers to the GRAMMYs; they previously won Best Hard Rock Performance for 2009 for "War Machine."
This is their new song, “Rock or Bust,” off the same-named album released in November. I don’t foresee any busting, because they’re doing A LOT of rocking, am I right?
@showbizshelly has on her devil horns.
Cool shorts! Angus Young’s trademark school-uniform outfit made some fashion waves in the 70s. Or, at the very least, made him a guy who stood out, sartorially speaking. Was he a walking contradiction? The shorts made him look so innocent …
Last year was kind of rough for AC/DC, despite the release of their 15th studio album: Not sure if you’ll remember, but drummer Phil Rudd ran into some weird and kind of disturbing legal trouble, and founding member Malcolm Young left the band.
Hell’s bells! They’ve segued into the classic “Highway To Hell.” The thunder from Down Under are ripping it up.
And let’s not let the opening storm that was AC/DC slip our memories. What’s your favorite AC/DC tune? Pretty hard to argue with “Back in Black” ...
Anna Kendrick in a snazzy suit
Here she is, the grand Ms. Grande, in her slender, elegant glory. This is Ariana’s “Just a Little Bit of Your Heart,” off her 2014 smash “My Everything.”
First-time nominee Ariana is up for two GRAMMYs: Best Pop Vocal Album and Best Pop/Duo Group Performance for her megahit "Bang Bang,” with Jessie J and Nicki Minaj.
… and the pedigree behind this pretty ballad! It was written by One Direction’s Harry Styles (swoon).
The timing of this tender performance couldn’t be better, with Valentine’s Day less than a week off. Speaking of valentines: Cat Valentine has come a long way.
Was anybody surprised that Sam Smith took home the GRAMMY for Best New Artist?
Just a little bit of your heart is what she wanted, but the Staples Center crowd is giving her more than a little love. Quite a lot, in fact. And so are you at home, I bet. What do you think?
It’s not unusual to see those two teamed up, is it? OK, maybe a little. But I like it!
Here they’re saluting the great Barry Mann and Cynthia Weil, who wrote songs for everybody from Eydie Gorme to Three Dog Night.
Earlier, Jessie J tweeted that she was excited and a "little overwhelmed" about her performance with Tom Jones tonight.
This gem, of course, is “You’ve Lost that Lovin’ Feelin’.” Remember the Hall & Oates version? Maybe it’s the classic Righteous Brothers one you best recall. A sad song, but a gorgeous one. Really poignant.
Tom Jones and Jessie J are divvying up the emotional investment this song deserves, taking it seriously. Playing it right, in other words. Respect!