Sans rumored girlfriend Katie Holmes, actor Jamie Foxx hit the town with friends to prove that he isn't settling down anytime soon.

Foxx, along with LeBron James and Miami Heat teammates Mario Chalmers, Ray Allen and Michael Beasley, stopped by NYC's Marquee where Foxx gave a surprise performance for the crowd on Wednesday night.

Foxx, who is featured on the cover of this month's Men’s Fitness, arrived around 12:30 a.m. and partied the night away with his pals. 

"They were dancing and having a great time," a source told Enstars, adding that Foxx eventually decided to take the stage for an impromptu  performance. 

"Foxx asked the DJ to play his song Golddigger, saying he wanted to sing it for the crowd," the eyewitness revealed. (Foxx also sang a few more songs for the surprised party-goers.)

After the performance, Foxx and his group left together around 2:30 a.m. 

Earlier that day, Foxx blasted rumors that he was dating Tom Cruise's ex-wife. 

"[The rumors] are 100 percent not true," Foxx told Entertainment Tonight. "In fact, it's quite hilarious because we simply danced at a charity event along with a lot of other people."

The pair originally sparked dating rumors after they danced together to Robin Thicke's Blurred Lines at a Hamptons charity bash in late August.  At the time, Holmes' rep also insisted they were just "friends."