Watch out American Idol

The kiddo surprised me this morning on our way to his aunt's place. The song 'Mad' by Ne-yo comes on the radio and out of no where he's singing along with him during the chorus part.
Every time I'd lower the volume to hear him singing, he'd stop. He didn't know all the words, but the parts he knew...man, he was singing it! His singing went something like - 'Naaaa-thing, naaaa-thing.....go bed mad ah you, mad ah me. what do now? sometimes gone rain...baby know....naaa-thing, naaa-thing, naaa-thing!
man, I wish I had stopped to video him singing. Hopefully he'll sing again for me when I have the camera out and I'm not driving.
Here's the song, if you're not familiar with it.