In the second half of Billy Joel's Madison Square Garden show yesterday, he brought out special guest Olivia Rodrigo, and performed her huge "deja vu" song, which features lyrics including "I'll bet that she knows Billy Joel / 'Cause you played her "Uptown Girl"" and "Play her piano, but she doesn't know / That I was the one who taught you Billy Joel."

Before performing "deja vu", Rodrigo said, "I'm such a huge fan, and I kind of wrote this next song about you."

As well as playing Rodrigo's "deja vu", Joel got Rodrigo to join him for "Uptown Girl".