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Jon Bon Jovi is finally ready to rock again -- revealing to PEOPLE he's fully recovered four years after undergoing vocal cord surgery and calling the whole experience a "rebirth."

The rock icon opened up about the long road back, admitting that while the surgery was successful, there was a time when his future as a performer was very much up in the air.

Jon says he spent years working with vocal coaches on retraining his voice ... and can now finally say he's back to full strength.

The recovery took far longer than Jon expected, but neither he nor his band ever lost faith the comeback would happen.

Machine Gun Kelly's Tuesday night concert in Michigan was a washout due to bad weather -- and it ultimately got canceled halfway through his performance!  

The singer hit the stage at the outdoor Pine Knob Music Theatre near Detroit -- and cranked out about 4 songs before the rain and thunder rolled in.

We're told security ushered MGK off stage for his own safety and told the packed crowd to shelter in place under the amphitheater's large overhang or in their cars parked nearby.

Walter Parazaider -- one of the founding members of rock band Chicago -- is dead ... TMZ has learned.

His wife, JacLynn, tells TMZ ... Walter died at 2:10 AM Wednesday morning while in hospice, with her by his side. He was diagnosed with Alzheimer's 6 years ago and ultimately succumbed to the disease.

JacLynn adds ... "He had put up a good fight with Alzheimer's and unfortunately it ended tonight. We are going to miss him for sure ... We were married for 59 years and we had 59 wonderful years."

Singer Jelly Roll isn't letting his split from Bunnie XO mess with his money ... and he took the stage in Canada for his tour with Post Malone -- only a day after his divorce went public.

Jelly took the stage in Toronto at Rogers Stadium on Tuesday night.

The tour was initially scheduled to start on May 13, but was pushed back because Post claimed he needed extra time to finish new music. Jelly and Post are scheduled to perform shows until October.

Jelly Roll was already looking like a single man weeks before news of his split from Bunnie XO became public ... 'cause he ditched his wedding ring during a major CMA Fest performance.

The country star took the stage at Nashville's Nissan Stadium on June 6 ... and looking back at the photos now, one detail jumps out ... there was no wedding band on his finger. At the time, it didn't raise many eyebrows. Now? It tells a very different story.

As TMZ first reported Monday, Jelly filed for divorce from Bunnie XO in Tennessee on May 18, citing "irreconcilable differences" and listing their separation date as May 9.

Taylor Swift may be in the final stages of planning her highly-anticipated wedding ... but that ain't keeping her away from her happy place ... the recording studio!

The "I Knew It, I Knew You" singer was seen arriving at New York City's famed Electric Lady Studios on Monday night ... serving the poker face we know all too well ... and she stayed inside all night long.

Taylor was spotted heading out of the studio around 6 AM Tuesday morning ... wearing the same casual jeans and tee combo ... and smiling as she ducked into her vehicle.

Ashley Parker Angel isn't ruling out a future return to O-Town ... telling us "never say never" when asked if he'd ever consider reuniting with the group ... but it sounds like there's some lingering issues that need to be resolved.

Ashley chopped it up with Alexa Klohn and Charlie Neff on the "TMZ Podcast" and he revealed there's still some group drama that hasn't been fully hashed out. He says they simply haven't found the right environment to have those difficult conversations.

Despite all that, the boy band singer insists he's supportive of his former bandmates and is happy they're continuing to perform and celebrate O-Town's legacy.

Ariana Grande does have tears left to cry after all ... and she let them out onstage during her tour.

The pop star was about to perform "Hampstead" at Crypto.com Arena in Los Angeles Sunday night when she got so overwhelmed by her fans' support she broke down in tears before introducing the song.

Wiping away tears, Ariana explained feeling overwhelmed "in the most beautiful way ever."

Oliver Tree's ex Melanie Martinez says she's been an "absolute wreck" ever since news broke that the popular singer died in a fiery helicopter crash.

Martinez posted a heartfelt tribute on Instagram Stories after Tree and five other people were killed Sunday when two helicopters collided while flying over Rio de Janeiro, Brazil. 

In her message, Martinez showered Tree with praise, writing that he was a true artist with a soft heart and a contagious and warm laugh.

Oliver Tree laid out the details of his will during an interview just weeks before his death ... and he says his family's not getting a dime.

The singer-songwriter -- who tragically passed away in a helicopter crash on Sunday -- appeared on the "Zach Sang Show" back in April ... and he told the host he doesn't feel the wealth he's made from music belongs to him.

Tree says he set up his will so most of his cash is going back to artists through a foundation he started.

Wu-Tang Clan is being hailed by New York Knicks' fans as the savior of their historic NBA Finals comeback win ... and while RZA wouldn't say they helped the Knicks triumph, he tells TMZ the iconic group brought a spark to a deflated Madison Square Garden.

Here's the deal ... the Knicks were getting destroyed by the San Antonio Spurs at halftime of Game 4 when Wu took the floor for a performance that got the place rockin' and rolling.

RZA tells TMZ ... the group had to dig deep ... because they were also super bummed by the Spurs having their way with their team ... so they changed some lyrics to include the Knicks in their songs to make sure fans got back in the mood ... and the rest is, well, history.

The man who was arrested after Sabrina Carpenter claimed he showed up at her home multiple times is now objecting to her request for court-ordered protection against him ... TMZ has learned.

Sabrina obtained a temporary restraining order against William Applegate earlier this month ... but Applegate is now asking the court to deny the singer's request for a permanent order prohibiting him from coming near her ... according to new legal docs obtained by TMZ.

Applegate said he did not believe Sabrina wanted the restraining order … and that it was concocted by her team and "brought against Carpenter's will by her employed security group and the Los Angeles Police Department in conjunction with her legal team as an artifact of a military government program's maligned instructions."

He claimed Sabrina's Coachella performances on April 10 and April 17 were "made for and directed at me."

Applegate also alleged that the singer and her family "knew about my presence outside her residence as soon as it began in April."

A clip of Taylor Swift talking to Jimmy Jam at Thursday's Songwriters Hall of Fame red carpet is going viral -- showing her telling the R&B legend she was having trouble holding a conversation with him -- but we're told the video doesn't tell the whole story.

Check out the short clip ... Taylor and Jimmy are chatting it up on the red carpet before Thursday night's ceremony kicked off at the Marriott Marquis Hotel in NYC.

Their back and forth seemed a bit awkward, and it didn't take long for Taylor to say ... "I feel like I'm no good at conversation right now."

Olivia Rodrigo named her new album "You Seem Pretty Sad for a Girl So in Love" ... but judging by these pics, she's looking anything but gloomy!

To celebrate the release of her third studio album, we're taking a peek behind the curtain at Olivia doing what makes her happy ... making music.

Whether she's locked in with a pair of headphones at a recording studio or strumming away during a guitar jam session, she's clearly having the time of her life.

Taylor Swift just hit the red carpet for the Songwriters Hall of Fame looking absolutely dazzling ... and a far cry from her going bonkers last night at the Knicks game.

The superstar was in full control of the moment ... and gave the carpet cameras exactly what they wanted as she posed in a beautiful, form-fitting black dress featuring a floral pattern.

As you know ... TS was at Game 4 of the NBA Finals last night, courtside seats along with pals and fellow musicians and singers Alana and Este Haim ... going absolutely berserk during and after the game.

'Secret Lives of Mormon Wives' star Miranda Hope is kicking off her country music career with a bang ... and let's just say her debut single isn't exactly a love letter.

Speaking on the "Sorry We're Cyrus" podcast, Miranda opened up about her upcoming track, "FU4THAT," after the hosts pointed out it was quite the departure from her religious upbringing. Miranda agreed wholeheartedly ... making it clear she's done letting people walk all over her.

According to Miranda, the song represents the gap between the old version of herself -- the chronic people-pleaser -- and the woman she's become today, someone who's no longer interested in taking anyone's crap.