The 36-year-old singer dropped by Jimmy Kimmel Live! on Thursday, where she talked about her eldest son, Egypt, actually producing a song for rapper Kendrick Lamar ... at just five years old. Keys shares that at first, even Egypt didn't quite understand that he had created a new song.
"Like, really, that was his brain child -- his mind," Keys says of the "track 7, 2014 - 2016" song on Lamar's Untitled Unmastered album. "He heard these melodies and one day, he was singing these things, and 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.'"
"So, I had him go pick it out at the piano," she continues. "He figured out the melody, and then his daddy took him to the studio, and he played all the different instruments in the studio, played the keyboard, programmed the drums and did what he heard."
Keys also talked about Egypt and the "M.A.A.D. City" rapper's close connection.
"Kendrick met him at the Super Bowl last year and just said how much he was really connected to him, and said, 'If you send me something, you know, I'll try to use it,' and he honored it," she recalled.
Last March, Swizz revealed that Egypt had produced a track for Lamar with a proud Instagram post.
"This is the best Dad moment everrrrr!!!" the 38-year-old producer wrote. "Congrats to my son Egypt for producing his 1st track on this amazing Kendrick album. He's only 5 years old wowwwwwww. @aliciakeys look at our lil guy baby. #blessingsonblessings Thx #Kendrick for investing in the future!!! Track 7."
Swizz also proudly Instagrammed a cute video of his son at the piano last November, sharing that his son wrote his first song
, titled "Super-boy."
Watch Egypt's adorable -- and impressive -- piano skills in the video below!