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James Corden visits the cast of 'Friends' at the set in Warner Brothers

James Corden visited the cast of "Friends" at the nostalgic set in Warner Brothers!

"The Late Late Show" host, along with Jennifer Aniston, Courteney Cox, Lisa Kudrow, Matt LeBlanc, Matthew Perry, and David Schwimmer did a carpool karaoke singing to Friends' theme song "I'll be there for you."

The cast also went a trip down memory lane as they talked about their reunion.

"Walking on the set for the first time was a bit jarring. We didn't expect it to hit us as hard as it hit us, I think," Jennifer said.

Meanwhile, David said for him it has been "really kind of beautiful."

"It was really meaningful and emotional to be on the set and then to finally be in the same room together after all this time," he said.

After their drive, James forgot to hit the brake when they stopped and the car started to move backwards. When the cast safely disembarked, he joked that he "nearly killed" the cast of "Friends."

James then went around the set where he took selfies and found CDs explaining what it is to "young" ones.

His visit ended with a meaningful conversation with the cast at the Central Perk.

"We talked about it a little between ourselves, you know, it was great to see everybody but me personally I didn't sort of anticipate how much being on set was going to hit me," Matt said.

"And it is just we spent a lot of time and a lot of laughs, some of it made it on the camera but the funniest stuff happened between us that never made it to TV, those are like the memories that we keep talking about," he added.

The long-awaited "Friends" cast reunion was broadcast last May 27 on HBO Max featuring a slew of celebrity guests including Justin Bieber, Lady Gaga, and K-Pop group BTS.

—Jannielyn Bigtas/MGP, GMA News