Fans braved the bitter cold to attend the free New Year’s Eve concert in front of the Philadelphia Art Museum and watch a midnight fireworks display kicking off the city’s celebration of the nation’s 250th anniversary.

The concert was headlined by LL Cool J, the two-time Grammy-winning rapper who also has had a long career in movies and TV, including as a regular cast member on the series NCIS: Los Angeles.

About 10 minutes to midnight, LL Cool J brought out Philadelphia-based rapper Freeway as a surprise guest.

Mayor Cherelle L. Parker joined the stage just before 10 p.m. to welcome another headliner, DJ Jazzy Jeff, alongside radio personality Lady B.

“My mayor is a hip-hop head,” Lady B said. Parker told the crowd: “Tonight, we remind the nation, that we are one America, a united nation.”

After taking the stage, Parker told a gaggle of reporters “what you are seeing is ‘one Philly, a united city’ in action” — referencing her mayoral slogan.

“Philadelphia is the birthplace of democracy, sixth-largest city in the nation — Why wouldn’t we kick off 2026, the Semiquincentennial, the 250th birthday of our nation?” she said. “Because Philadelphia, it’s where it happened.”

When asked if the free concert will become an annual tradition, Parker quipped, “Well, the budget process.” (A final price tag on the event was not yet available.)

As for Parker’s resolutions for Philly in 2026: “To work harder, to dream bigger, and to do the impossible.

“We have a lot of challenges to address here in our city, but with our amazing team, there is nothing that we cannot accomplish together,” she said.

Taking the stage shortly after 8 p.m., multi-instrumentalist Adam Blackstone, the Philadelphia High School for Creative and Performing Arts graduate and University of the Arts alum who has since performed with some of the world’s most popular musical artists, declared: “I’m home right now. They told me Philly’s the spot to be.”

Just before 11:30 p.m., attendance had grown to around 7,500 and was still growing, according to the show’s producer, Scott Mirkin, of ESM Productions.

The crowd had been modest up to around 10 p.m., but a late surge may have included people only interested in seeing LL Cool J or the fireworks display after the concert.

All were bundled in winter gear as the wind chill dipped into the 20s and even flurries made a late-night appearance.

Performers repeatedly commented on the frigid temperatures Wednesday night.

“I know it’s cold but we’re going to warm you up,” Dorothy frontwoman Dorothy Martin told concertgoers.

Martin later said: “I know you’re cold, but your heart is warm.”

The temperature made Fairmount residents Corey Fletcher, 32, and Alyza Ngbokoli, 30, hesitate, despite the draw of Cool J and Jazzy Jeff. Both were surprised by the prospect of an outdoor concert in the winter.

“It’s hard to breathe — it hurts my lungs,” Fletcher said of the cold. (Fletcher said fall is the ideal season for outdoor events; Ngbokoli said summer.)

For next year, Ngbokoli recommended organizers invest in heat lamps or warming tents. This year, concertgoers had the option of purchasing a hot meal — fried desserts, fried chicken, or lobster bisque from various food trucks — hot apple cider, hot chocolate, or $8 White Claws and other spirits.

Die-hard fans were undeterred by the cold.

Sarah and Mike Murray, of Wilkes-Barre, estimate they’ve seen Cool J in concert “almost double-digits.”

“He’s easy on the eyes,” Sarah, 46, said.

“You can’t argue with that,” chimed Mike, 54. “He’s LL — ladies love him.”

The Cool J enthusiasts were supposed to see him perform on the Parkway on July 4, but the “Mama Said Knock You Out” and “I Can’t Live Without My Radio” singer canceled in solidarity with striking municipal workers.

What are the Murrays looking forward to in 2026?

“See LL Cool J more,” Mike said.

Cousins Tahira and Sean Tyler came to the Ben Franklin Parkway expecting a party. It was 55-year-old Sean Tyler’s first New Year’s Eve out on the town, and both were drawn in by LL Cool J.

Sean Tyler, of Overbrook Park, said she remembered in the ‘80s listening to the then-new artist’s first single on Power 99, but had never seen him live. Both Tylers discovered newfound appreciation for LL Cool J canceling his summer concert in solidarity with striking city workers.

“It showed how many people that it affected, and how much in wages, benefits — it shows how much it affects a broad range of people,” Sean Tyler said.

Upon walking into the barricaded Parkway, Sean and Tahira said the visible Philadelphia police presence and security measures made them feel safe.

Police Commissioner Kevin Bethel has said police will be out in full force, and asked concertgoers to leave weapons at home.

Tahira said the show, featuring local talents — like Blackstone and Jazzy Jeff — is the perfect way to ring in 2026, and the nation’s 250th birthday.

Tahira said: “Let’s continue to love Philly in the right kind of way — “

“ — And go Birds!” Sean said.