Acquiring public domain songs for television can be tricky (and expensive), so Jennifer Hudson and James Corden decided to cut a few corners! On Monday night's episode, the two performed a few popular songs on CBS' Late Late Show. Prior to the duet, Corden told the audience:

“Ladies and gentlemen, if there’s one thing I love, I love singing well-known songs. And if there’s one thing CBS doesn’t love, it’s me spending money on the rights to those songs. So tonight, we’re presenting a medley of some of the hottest public domain songs around.”

The two then went on to put a soulful twist to tunes like "Skip to my Lou," "London Bridge is Falling Down" and "If You're Happy and You Know It." But my favorite was the gangsta-rap rendition of "Old MacDonald Had A Farm"!

After watching Hudson's Corden appearance above, get into this throwback Fuse interview with the singer where she discussed her JHUD album.