James Corden's Dream Carpool Karaoke Guest Revealed!

LOS ANGELES (CBSLA.com) — When James Corden does Carpool Karaoke on the "Late Late Show," it's guaranteed to go viral.

In fact, the show holds the Youtube record for the most watched late night clip with Carpool Karaoke featuring Adele, which has 84 million views.

CBS2 News entertainment reporter Suzanne Marques sat down with Corden to talk about how the musical fun all started.

"Everyone said 'No.' We asked everyone you can imagine," Corden said. "Imagine any artist you can come up with in your head, we asked them. They said 'No.' "

Until Mariah Carey finally agreed.

So, who was his most-memorable guest? And who would be Corden's dream guest? It's all in the interview!