"He heard these melodies and one day he was singing these things," Keys explained
on Jimmy Kimmel Live
in February. "I was like, 'Babe, what is that?' and he's like, 'Oh, that's the new song for Kung Fu Panda 4.' I said, 'There is no Kung Fu Panda 4,' and I said, 'Hmmm, you're hearing something.'"