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Jimmy Fallon gave Jonas Brothers fans quite the surprise at the band's latest show ... rocking the NYC crowd with a very impromptu karaoke performance.

The "Tonight Show" host jumped on stage at Yankee Stadium Sunday night, clearly a shock to folks in the crowd -- he showed up as the concert's intermission came to an end, showing off his boombox before jamming out to The Killers' "Mr. Brightside."

Sources with direct knowledge tell TMZ ... Nick Jonas asked Jimmy to show up at their NYC show a week ago -- he was told he could do whatever he wanted, and Jimmy tested the limits, asking if karaoke with his boombox would be alright.

Obviously, that was all good with the Jo Bros ... and we're told there was no rehearsal for the surprise appearance, but it looks like it was a moment fans will remember for a long time.

BTW, the Jonas Brothers are currently embarking on their "Five Albums. One Night" world tour, which features hits from 5 of their albums.

Clarence Avant, the music executive known to many as the "Black Godfather," has died ... 19 months after his wife was murdered in their L.A. area home.

The legendary businessman passed away at his home in L.A. on Sunday, according to a statement from his kids, Nicole and Alexander, as well as his son-in-law, Netflix co-CEO Ted Sarandos.

They said Clarence is leaving behind "a long family and a sea of friends and associates that have changed the world and will continue to change the world for generations to come. The joy of his legacy eases the sorrow of our loss."

Clarence started as a manager of a lounge in New Jersey in the 1950s, and was mentored in his early years by Joseph G. "Joe" Glaser -- Louis Armstrong's music manager.

He quickly became a pioneer in the world of music ... managing countless singers and performers like Sixto Rodriguez, Bill Withers, and duo Jimmy Jam & Terry Lewis.

He also founded 2 record labels in his time -- Venture Records in 1967 and Sussex Records in 1969 ... and went on to launch the first African-American-owned FM radio station.

Clarence made moves in the industry for decades ... brokering the sale of Stax Records, becoming chairman of the board of Motown Records, and getting inducted into the Rock and Roll Hall of Fame in 2021.

He has a star on the Hollywood Walk of Fame and was awarded an Industry Icon Award at the Grammys in 2019 -- the same year his Netflix documentary, "The Black Godfather," debuted.

FYI, he married his wife, Jacqueline, in 1967 -- and TMZ broke the story, she was shot and killed in a burglary attempt at their L.A. home in 2021.

We last saw Clarence leaving Craig's in WeHo in 2022 ... being greeted by some fans while spending a night out with Ted.

Clarence was 92.

Jennifer Lopez might be on vacation, but that doesn't mean she won't pick up a microphone if the mood strikes ... which is exactly what happened on this Italian island Saturday.

The actress/singer hit up a joint in Capri called Anema e Core -- which is a restaurant/live music venue ... where tons of stars have visited over the years, including J Lo. Looks like she wanted to hit up again for the good vibes ... and definitely contributed to them too.

Watch ... Jen was handed a mic, and got to work -- with the background music for Gloria Gaynor's "I Will Survive" starting to swell ... and JLo getting ready to belt.

Soon, the song starts ... and Jennifer launches into the first verse with a lot of gusto. The crowd that was all around her definitely got into it quickly -- as did her entourage, who started wailing on a tambourine and hyping the moment even more. It was pretty cool, TBH.

In addition to 'IWS,' Jen also sang her own song -- "Let's Get Loud" -- and that too got applause. No sign of Ben Affleck anywhere for this trip ... seems Jen's flying solo here.

Bad weather threw a monkey wrench into Lionel Richie’s plans to perform at Madison Square Garden in NYC.

The iconic R&B singer was set to hit the stage with Earth Wind & Fire Saturday night — but the act of nature derailed their sold out show and an hour after it was supposed to start Lionel made his disappointing announcement.

Lionel posted on X (formerly Twitter), “Due to severe weather and being unable to land in the NY and surrounding areas, I’m unable to make it to the show tonight.”

He went on, “I’m so bummed. We are rescheduling the show to Monday Aug 14. Can’t wait to perform for you all. Tickets for tonight’s show are valid for the show on Monday.”

The 20,000 strong audience was totally bummed too. Video from inside the venue shows fans booing as an MSG official announces the show had been canceled.

Jason Aldean was able to get a little juice out of his right-leaning song -- and now, another guy's doing the same thing ... but he isn't even close to as famous, which is interesting.

The dude's name is Oliver Anthony, and he's a man-of-the-land living in Farmville, Virginia -- however, he's also a musician ... and a song he just released, "Rich Men North of Richmond,: is catching fire among conservatives all over the country ... in just a 24-hour window, too.

The reason ... the track (and the music video, too, it seems) is resonating with folks in a grassroots kind of way -- seeing how he's performing it out in the woods, and in a very stripped-down environment. Plus, yes ... OA definitely has talent -- a unique sound, indeed.

Now, as for the actual lyrics ... they seem to walk the line between the everyman, working-class American POV and far-right sentiments -- depends on how you look at it, we suppose.

Oliver addresses D.C. politicians -- without explicitly identifying a party -- sucking Americans dry and wanting total control of their lives ... while going on to lament social ills, including seemingly slamming the welfare system. He also appears to reference Jeffrey Epstein. 👀

In the wake of Oliver uploading this to streaming platforms, it looks like it's been spiking in sales -- with some sites showing it's #1 on iTunes ... meaning it's been purchased a crap-ton since it went up, but doesn't necessarily account for streaming numbers. Not yet, anyway.

Several right-wing influencers are praising Oliver's song/his passion, and some politicians are chiming in as well with a big thumbs up -- including Georgia Rep. Marjorie Taylor Greene.

As for Oliver, he's overwhelmed by the attention -- saying he'll be performing locally for the time being. It remains to be seen if 'RMNOR' will have the same chart success Aldean recently experienced, but based on the groundswell already ... it's certainly possible.

This is a pretty fascinating trend we're seeing -- it appears when right-wingers perceive something (like a song) they think addresses their grievances/perspectives, they lean into it ... and, from the small sample size we've noticed, it can be effective in the marketplace.

Morgan Wallen made a pretty bold move before his concert in Ohio Friday ... because he's now completely bald -- as in no hair!!!

The country music singer walked out onstage at Ohio Stadium in Columbus after he shaved off his famous mullet with his head looking like a cue ball.

Morgan wore a red baseball cap ... but it couldn't hide the fact all of his hair was missing in action.

Check out video that surfaced on Tik Tok ... Morgan stopped to mention his new look in between songs, making light of the situation by saying, "I didn’t like the long hair anymore so I shaved it off." The crowd just hollered and laughed.

But some of his fans weren't having it and expressed their unhappiness with his transformation.

One person wrote on X (formerly Twitter) ... "Finding out Morgan Wallen cut his hair off just ruined my night."

Duran Duran guitarist Andy Taylor shared some good news about his battle with prostate cancer ... he's says he's expected to live 5 more years thanks to a new drug.

Taylor -- who joined the British rock band in 1980 -- told BBC News he was contacted by a scientist who suggested Lutetium-177 -- a "nuclear medicine" -- to treat his stage 4 prostate cancer.

The scientist noted Lutetium-177 only attacks cancer cells in the body because it can't see healthy cells.

Taylor claims he first tried the drug six weeks ago and it seems to be working. He said, “It kills stage four cancer in your bones. And so what it’s effectively done is extend my life for five years.”

Although Taylor was diagnosed with prostate cancer in 2015, it took seven years for the news to leak out.

You may recall, Duran Duran front man Simon Le Bon made the stunning revelation onstage as the group was inducted into the Rock & Roll Hall of Fame last year. Taylor was noticeably absent, but Le Bon read a statement from him explaining his health issues.

The nearly six-figure transaction for the microphone Cardi B chucked into her crowd, sparking a police investigation, has hit a snag ... we're told the winning bidder didn't pay up.

Here's the deal ... Cardi's infamous microphone was being auctioned on eBay and the bidding war came to an end Tuesday with a $99,900 winning bid ... or so it seemed.

Scott Fisher, the mic owner running the auction, tells TMZ … unfortunately, his suspicions came true and the winning bidder failed to pay for Cardi's mic.

We're told the person who placed the winning bid had 48 hours to fork over the cash, but didn't respond to multiple messages ... so Scott still has the mic. The proceeds from the auction were supposed to benefit charity, and Scott says he's exploring his options ... including sending a purchase offer to the second-highest bidder.

LM Cases, a case company in Ohio, heard about the story and hooked him up with a mic case for whoever ends up with it.

Scott says if the other top bidder doesn't end up buying the mic, he's considering selling it privately.

There's quite a story behind the mic ... as we reported, Cardi was performing at Drai's Beachclub in Las Vegas when she asked the crowd to splash her with water, only to get pissed when someone later tossed ice and liquid on her, resulting in the mic toss.

Kevin Costner is a big-time Taylor Swift fan, and he doesn't care who knows it ... giving massive props to the singer after taking in one of her six record-setting shows in L.A.

TMZ broke the story -- Kevin was in a private suite Monday at SoFi Stadium with his daughter, Grace Avery, and a group of friends for Taylor's "Eras" tour.

The concert buzz was apparently still running through Costner Thursday when he jumped on his Instagram to rave about the show, posting a series of videos with the caption, “My videos are blurry, but I had an amazing time with my daughter at the Taylor Swift show. I was absolutely blown away watching her art bring so many people together.”

Remember, we got video of the "Yellowstone" star jamming along to "We Are Never Ever Getting Back Together" -- a fitting anthem given the nasty state of his ongoing divorce with Christine Baumgartner.

But, Kevin wasn't done there ... he also wrote of the show, “I had a great view of her band and had a blast watching them, too,” he added. “An inspiring night. I’m officially a Swiftie!”

Monday marked the first time we'd really seen Kevin let loose since Christine filed for divorce back in May -- ending their 18-year union which produced 3 kids.

Christine cited "irreconcilable differences" as the reason for the split -- and it was just last month when a judge ordered Costner to pay $129,755 in child support ... a bargain compared to the $248,000 Christine was asking he pony up.

Taylor Swift wrapped up the final night of her L.A. shows with a bang -- tons of stars showing up to watch her perform, and a big reveal onstage to stir up Taylor's diehard fans.

SoFi Stadium was packed to the brim Wednesday night for her 6th and final concert, but it wasn't just your regular Swifties in the crowd -- because A-listers like Sydney Sweeney, Emma Stone and Karlie Kloss were rocking out to her hits all night long.

That's not all ... Adam Sandler, Sadie Sink, Anya Taylor-Joy, Kerry Washington, Hilary Duff, Jason Bateman, Miranda Cosgrove, Halsey, Miles Teller, ex-NFL star Andrew Whitworth and Becky G showed up to jam out.

Even John Krasinski and Emily Blunt headed to Taylor's sold-out show for a date night ... but it certainly wasn't a quiet place at SoFi.

Taylor took some time out of Wednesday's show to announce the release date for her "1989 (Taylor's Version)" album ... which obviously drove fans crazy.

As we reported, celebs have been showing up at her L.A. shows over the past week, including folks like Flavor Flav, Kevin Costner and Vanessa Bryant with her daughters.

You'll recall, Taylor kicked off her "Eras" tour back in March in Arizona, and has been crossing the country with her 3+ hour setlist. L.A. is, technically, the end of her U.S. leg -- she's going international next year -- but she's now added a few more U.S. shows for late 2024.

So, we're saying there's still a chance if ya missed her this time.

As for her overseas shows ... she's starting 2024 in Tokyo, and then globetrotting to places like Australia, France, Spain, Ireland, Germany and the U.K.

Tekashi 6ix9ine was back in a familiar spot Wednesday night ... posing for a booking photo after getting arrested in Florida.

The rapper was busted for failing to appear in court and brought to the Palm Beach County Jail, where he mugged for his mug shot. He was later released after posting $2,000 bail.

The arrest stems from 3 traffic tickets Tekashi received after he was pulled over by police in June for driving way over the speed limit.

According to court docs ... Tekashi was going 135 mph in a 65 mph zone on the Florida Turnpike before he was given a ticket for speeding. He was also issued citations for having an unregistered vehicle and no car insurance.

Tekashi failed to appear for a July court hearing to address the tickets ... leading a judge to issue a warrant that resulted in last night's arrest.

6ix9ine has always been a magnet for trouble. His many brushes with the law are notorious and he's perhaps best known for cooperating with the feds in his 2018-2019 racketeering case in which he testified against members of his former gang.

Taylor Swift made a HUGE announcement during her final California concert Wednesday night ... she's re-releasing her "1989" album with 5 never before heard songs!!!

The pop legend was performing for the sixth night at SoFi Stadium in Inglewood when she surprised the packed crowd with news of the re-release, motioning to a large screen, which pictured fresh art for the record due out on October 27.

Check out video, obtained by TMZ, which shows Taylor revealing her exciting plans for the new album after thanking her gazillion fans for watching her play live during her "Eras" Tour.

Taylor originally released "1989" in 2014, featuring 13 tracks on the standard album and 16 tunes on the deluxe version. The records contained some of her biggest songs, such as "Shake It Off," "Blank Space" and "Style."

Now, Taylor is treating everyone to 21 songs on the "1989 (Taylor's Version)" ... which includes 5 previously unreleased, soon-to-be hits, which she also promoted on Instagram.

Taylor wrote the "1989" re-release was her "most favorite re-record I've ever done because the 5 From The Vault tracks are so insane."

She added, "I can’t believe they were ever left behind. But not for long!"

Robbie Robertson, songwriter and lead guitarist for legendary rock group The Band, is dead ... TMZ has confirmed.

Sources close to Robbie tell us he died Wednesday in Los Angeles after battling prostate cancer for about a year. We're told he'd been doing ok, recently, but on Tuesday he told his wife he wasn't feeling well, and she took him to a hospital.

We're told his wife got a call from the hospital in the early hours of Wednesday informing her Robbie had passed.

Robbie's group first formed in Canada in the late '50s as The Hawks -- including the late Levon Helm and Rick Danko -- but they gained wide notoriety when they backed Bob Dylan on his 1966 tour ... and after that launched their own career as The Band.

Robbie wrote some of The Band's most iconic hits like "The Weight," and "Up On Cripple Creek."

He also had a solo career that included the 1987 hit song, "Somewhere Down the Crazy River."

The Band was the subject of Martin Scorsese's classic 1978 film, "The Last Waltz" ... documenting their final show. They were inducted into the Rock and Roll Hall of Fame in 1994.

Robbie was 80.

Some Taylor Swift fans are shelling out thousands to get a seat for her L.A. concerts, while others are gaining access for much less ... simply bribing security guards working the venue.

Taylor's set to perform show 6 of 6 Wednesday night -- a stretch of shows that has felt similar to when L.A. hosted the Super Bowl. Resale sites like StubHub are charging at least $700 before fees just for the cheapest seats.

However, we have direct knowledge of a handful of fans who've gotten in without tickets -- several of whom bribed security guards with cash.

The method -- these fans make it past the security checkpoints and to the ticketing agent. On Monday night, we know of 2 fans who got in at a mere $60 a piece ... while another paid $100 to get into one of the shows last week.

Once inside ... it's a bit of a stressful process as the fans tell us they were constantly moving, trying to find open seats, or standing in aisles and open zones until they were asked to move along, or the seat's rightful owners came back.

Swifties in the U.S. will be swarming their local Starbucks -- the coffee chain's brewed up a playlist that's all Taylor Swift, all the time.

A spokesperson for Starbucks tells TMZ ... the company is celebrating Taylor wrapping up the first leg of her Eras tour by rolling out the Taylor playlist for use as a soundtrack inside its U.S. company-operated stores.

Cleverly, the playlist is called "Starbucks Lovers" -- referencing the line in "Blank Space" -- and it has 122 tracks! We're told the company is "a forever Swiftie" and the team is loving "the kindness and joy that her tour is bringing to the world."

In case that's not enough for ya, the chain has given 10 of its popular drinks nicknames that go along with her albums -- so stop ordering a chai tea latte, and start ordering the Folklore instead.

Sinéad O'Connor is being laid to rest in Ireland, and droves of fans are flocking to the streets to say their final goodbyes during the funeral procession through her hometown.

Sinéad's coffin was driven Tuesday through the town of Bray, just outside of Dublin, and it looks like thousands of her adoring fans turned out to honor her ... tossing flowers onto the hearse as it slowly rolled past.

Mourners applauded the late singer as Bob Marley's "Natural Mystic" blared from a vehicle driving just ahead of the hearse.

The procession stopped in front of Sinéad's former home for a few minutes before continuing to her burial site.

Some of Sinéad's fellow music legends attended the funeral ... including U2's Bono, Edge, and Adam Clayton, as did The Boomtown Rats' Bob Geldof and Ireland's President Michael D. Higgins.

As we reported, Sinéad was found dead inside her London home last month, and her unexpected passing shook the world.

Artists around the world performed touching tributes, including a rendition of her hit, "Nothing Compares 2 U," from Pink and Brandi Carlile.