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Lizzo teaming up with Harry Styles is the collab that had to happen in 2020, and when it finally did -- to exactly NO ONE's surprise -- everyone went berserk!!!

The awesome tag team went down Thursday night for SiriusXM and Pandora's Opening Drive Super Concert Series at South Beach. Lizzo was billed as the headliner, and there had been zero mention of Harry ... until Lizzo dropped the announcement on stage.

And, out came Harry ... rocking a 70s look while fanning out and belting Lizzo's hit track, "Juice." He's been a huge fan of hers. So much so, Harry's sampled the track at his own concerts. He also covered the track back in December during a BBC Radio appearance.

His rendition alone's racked up nearly 10 million views.

Elon Musk really can do it all -- he'll be the first to tell you -- including write and perform his very own EDM song ... that's fittingly all about self-confidence.

The Tesla CEO -- who's going by E "D" M on Twitter these days -- has apparently been working hard in the studio on his new track, which is titled "Don't Doubt ur Vibe."

Musk dropped it on Soundcloud late Thursday night on his Emo G Records stream, saying ... "I wrote the lyrics & performed the vocals!!" Those lyrics consist of the title followed by "because it's true" ... which is alternated with, "because it's you," and repeated.

Genius.

The making of Elon's 4-minute EDM song must have been quite the journey, because when he first mentioned it on Twitter Thursday he said, "Just wrote a song called “Don’t doubt yer vibe" ... with a different spelling of "ur." He also stated, "this song is hard."

Finally, to make things as Musky as possible ... the Soundcloud artwork features his Cybertruck.

As you may recall ... the tech honcho also released a rap song on Soundcloud back in March -- a goofy autotune track about Harambe and Bombay gin.

Clearly, he's kicking things up a notch higher.

Billy Porter's got some solid advice for Lil Nas X on the heels of Pastor Troy's homophobic rant ... brush the dirt off that shoulder.

We got the "Pose" star out Thursday morning in NYC and got his take on Pastor Troy's hateful message directed at Lil Nas X just days after X won 2 Grammys for his hit track "Old Town Road."

Troy's words don't bear repeating here ... but ya gotta give props to Lil Nas X -- who wore a pink leather cowboy suit to the awards show -- for one helluva clap back. Porter doesn't seem surprised .... saying there's still lots of homophobic vibes in hip-hop.

Justin Bieber found more real estate on his body to add a new tat, and this one says a lot about where he is right now ... and where he plans on going.

The Biebs really branched out this time, getting a laurel wreath across his collar bone. The 2 branches connect in the area above his chest and below his neck ... nice and symmetrical.

JB flaunted his new ink Thursday outside a gym in L.A. -- one of his buds gave it an up-close inspection.

As for the meaning of the tattoo ... the laurel wreath is known as a symbol of triumph and nobility. There could also be a religious significance -- many view the wreath as a reminder that victory can only be attained by following God.

Justin's obviously been very open about his Christianity, and he's also revealed he's been through a lot recently, including his Lyme disease diagnosis.

He's fought through it, though, and already this year ... he's released a new single and a documentary. The future's looking bright too, with an upcoming album and tour.

Seems like he's feeling pretty triumphant about it.

Here's Harry Styles frolicking with sexy bikini models on a beach in Malibu for a music video shoot, and he can't keep his hands off ... the props.

We know what you're thinking, but it's all good, clean fun. Harry's shooting the vid for his new single, "Watermelon Sugar" ... so, naturally there are plenty of melons on set.

Harry sure looks like he's having the time of his life. Most likely because he's surrounded by waves and babes, and looking fly in a yellow Hawaiian shirt and matching trunks.

Not to worry ... no melons were harmed in the making of the video. Harry's got extremely soft hands. Well, that's what we imagine, anyway. Like you don't?!?

As we reported ... Harry debuted his new album, "Fine Line," last month during a show at The Forum in Inglewood, CA and his fans freaked out. "Watermelon Sugar" is one of the new tracks from that record.

Selena Gomez is out to prove all that glitters is gold ... because she looks relaxed and radiant on the set of a new music video.

The "Lose You To Love Me" singer was all smiles Monday afternoon as she walked up to the shoot in downtown L.A. ... rocking a disco queen look in a golden, backless dress and knee-high boots.

We're told she was likely shooting a vid for something off her new album, "Rare" ... possibly the title track.

As we've reported, Selena's third studio album features songs about relationships and breakups -- including hers with Justin Bieber -- but has an overarching theme of mental health.

Gomez recently revealed in an interview she experienced emotional abuse with Bieber, but says she's dealt with it and adds ... "I am really proud that I can say I feel the strongest I've ever felt, and I've found a way to just walk through it with as much grace as possible."

Juice WRLD had a massive cache of unreleased music when he died, and some of those songs could find their way onto a new album.

Sources close to Juice WRLD tell TMZ ... the rapper had about 2,000 unreleased tracks when he passed, and his team is discussing ways to pay tribute with his unheard work. We're told there are several ideas being floated around, including a posthumous album or music release.

Juice WRLD was constantly recording, whether at home or on the road. Our sources say he didn't do much besides ride his dirt bike and record music. Point is ... his creativity was flowing.

As you know, 26 of Juice's unreleased songs were leaked online last week, but they were quickly scrubbed from the Internet.

Our sources say most of Juice WRLD's music was kept under lock and key, but he would sometimes go to the studio and download tracks onto hard drives, and we're told his team believes that's what led to the leak.

TMZ broke the story ... Juice WRLD died last month from an accidental overdose of Oxycodone and codeine following a drug bust at Midway Airport in Chicago.

Demi Lovato made an emotional return to music in a performance that brought tears to the singer's eyes and the audience members to their feet.

Demi premiered her new single "Anyone" Sunday night at The Grammy Awards. Lovato needed to restart the song as she got choked up during her first attempt. She was then able to power through the performance to a standing ovation.

TMZ broke the story ... Demi wrote "Anyone" just 4 days before her overdose and hospitalization back in 2018. The song's lyrics are powerful and mention how Demi was in a tough state, reaching out for help ... but couldn't get it.

Sources close to Demi tell us the single is just the tip of the iceberg for her plans in 2020. We're told an entire album is on the way, and there have also been talks for a tour.

Nipsey Hussle was honored at the Grammys by some of music's biggest stars ... a tribute that also included a shout-out to Kobe Bryant.

DJ Khaled, John Legend, YG and others took the stage Sunday to remember the rapper with an emotional performance. YG, who was arrested Friday in L.A. made his first public performance since the incident ... but did not make any mention of what happened.

At the end of the tribute, a graphic of both Kobe and Nipsey was projected on the stage and DJ Khaled took the mic to remember Kobe.

TMZ broke the story ... Kobe, his 13-year-old daughter and 7 other people were killed in a helicopter crash Sunday in L.A. Bad weather conditions are a possible cause of the crash. The impact of his death has been felt across the world ... and Grammy host Alicia Keys took a moment to honor Kobe at the beginning of the show.

It's Grammy day, and before Hollywood accepts their golden gramophones ... they wanted to stunt a little bit on the way in. And stunt they certainly did.

The best in the music biz were all on hand Sunday at the STAPLES Center, where stars like Lizzo, Rick Ross, Billie Eilish, Finneas O'Connell, Ozzy Osbourne, Blake Shelton, Gwen Stefani, Skrillex, Ariana Grande, Lil Nas X, Billy Ray Cyrus, Iggy Pop, YBN Cordae, Sophie Turner, Joe Jonas, Nick Jonas, Priyanka Chopra, Billy Porter, Chris Brown and more.

A lot of the outfits were safe -- standard award show garb -- but others were out there. Among the more non-conventional/political looks ... Joy Villas "Trump 2020" dress, Megan Pormer's "No War 💖 Iran" gown and Ricky Rebel's "Impeach This" ass cheek statement.

If you thought their entrance was something, get a load of how they used their fashion behind the scenes. Definitely more movement than the usual posing on the way in.

Of course, Sunday's proceedings come right on the heels of the tragic passing of Kobe Bryant ... and it's being held at the same place he played for years, no less.

A bunch of fans have gathered outside of STAPLES and created makeshift memorials for him. Definitely a solemn day in the sports world and beyond, but the Grammys must go on.

The show must go on for YG ... according to his lawyer, anyway, who says the guy WILL perform at the Grammys after all, this following his arrest and release.

YG's attorney, Joe Tacopina, tells TMZ ... YG is moving forward with his Grammy Awards performance Sunday night, which had already been in the books before he got hauled in by cops last week on suspicion of robbery and bonding out the same day on $250k bail.

The rapper's performance is supposed to be in honor of the late Nipsey Hussle -- which Tacopina and others, including The Game, thought might've been behind the arrest.

We still don't know what the robbery allegation stems from, but YG's Escalade was involved in a high-speed chase back in July that left a 65-year-old man dead. The MC denied he was anywhere near that scene at the time ... it's unclear if the two cases are related.

Looks like YG's following in the footsteps of his fellow artist Young Thug -- who was also put in cuffs last year right before his Grammys performance, but was then released.

Cardi B looked amazing at Clive Davis' pre-Grammy bash Saturday night, and her hubby was more than happy to sample the goods!

Cardi hit up the annual bash at the Bev Hilton Hotel and wore a super NSFW dress, to Offset's resounding approval.

Offset and Cardi are nominated for Best Rap Performance for "Clout."

She's won a Grammy last year for Best Rap Album, and she definitely won at Clive's party.

Diddy railed on the Grammys Saturday, saying it's turned a blind eye to black artists ... notably, hip-hop artists.

Ironically, Diddy unloaded on the Grammys during his acceptance speech for receiving an Industry Icon award. It all went down at Clive Davis' pre-Grammy gala at the Beverly Hilton Hotel.

As you know, TMZ broke the story ... Whitney Houston died the evening of the same annual party back in 2012 when she was found in her bathtub at the Beverly Hilton, dead from an OD.

As for Diddy, he gave an acceptance speech that was interminably long -- 50 minutes, seriously. It ended at 12:30 AM, and toward the end is when Diddy set his sights on the folks who run the Grammys.

Among many other things ... Diddy said, "Truth be told, hip-hop has never been respected by the Grammys. Black music has never been respected by the Grammys."

As for Diddy's record ... 3 Grammy wins and 13 noms.

Tinashe opened up in a big way Saturday afternoon, saying she was so torn up when she found out her ex-boyfriend Ben Simmons was dating Kendall Jenner ... she hit the bottle and didn't stop.

Tinashe made the revelation at Roc Nation's pre-Grammy brunch, calling the day she found out her BF of 2 years was dating Kendall Jenner "the worst day of my life."

You may recall, Tinashe told us back in 2018 Ben texted her while he was at a club with Kendall, after they bumped into her in L.A.

She says she was wasted for a solid 6 months after that, but she says she's now fully recovered.

Ne-Yo is feeling a little less proud of the Grammys he believed were well-earned -- because much as it pains him, he admits the recent claims of vote-rigging are entirely possible.

We got the R&B superstar at LAX and with this year's award show -- the 62nd annual -- about to go down, we had to ask about the new controversy sparked by ousted Recording Academy president and CEO Deborah Dugan.

If ya missed it, she blew the whistle on what she claims is a deeply broken process of selecting Grammy winners. In a formal complaint, she claimed it's all rigged and accused Recording Academy committee members of throwing bones to certain artists due to personal or business relationships.

Ne-Yo didn't pull punches and told us exactly why it seems plausible to him. That said, he made it clear he hopes there were NO shady dealings behind his 3 Grammys.

Ne-Yo won two Grammys for his song "Miss Independent," and another for his 2008 album, "Because of You."

Jay-Z and a ton of other stars showed out for the annual Roc Nation Brunch this weekend -- but there's one person who's noticeably missing so far ... Lauren London.

Celebs like Jay, Diddy, DJ Khaled, Megan Thee Stallion, Miguel, Meek Mill, Winnie Harlow, Ella Mai, Usher, Kelly Rowland, June Ambrose, Robert Kraft, Mike Rubin, G-Eazy, Machine Gun Kelly, Lil Rel Howery, La La Anthony and several others were in attendance Saturday for the pre-Grammys shindig. They held one last year too ... it was also star-studded.

It looks like folks are still trickling in, but so far ... there's no sign of the late Nipsey Hussle's girlfriend, who came with him last year before his untimely death about two months later.

She's kept a relatively low profile in the wake of her partner getting gunned down in cold blood -- but LL has surfaced online with a few clothes and sneaker campaigns.

Speaking of that, we're seeing the colors of the event match Beyonce's ADIDAS x Ivy Park drop. Oh, and one other person, we're not seeing quite yet ... Bey herself.