Karsten at the piano again

So this is how quick Karsten picks up tunes by ear and plays them on the piano.  I have not taught him this song.  He was playing around on the piano this afternoon and picked it out all by ear.  And pretty quick too!  I'd say within a matter of 10 minutes he had this song down.  You can tell he makes a few mistakes, but if he practiced it another 10, he'd probably have it perfect!  Enjoy Grandpa!  We'll get him to play us some more as time goes by!