No idea where he got it ( neither his pops or I consider ourselves musically inclined).
I hear it's a capricorn thing.
This boy loves music.
He walks up to his music/sound machine, points, and says "sing" which is code for us to turn on Twinkle, Twinkle Little Star for him. Then he sings to the music, which comes out as "say, say, say, say" since he can't say the words yet.
Perhaps I'm raising the next Beibs or Buble?
(which means his mommy would be set for retirement)