Sometimes it's hard to tell just what kids like. And sometimes it's not.
Random likes it when I whistle. Has for over a month now. You can really tell that she likes it, as she lights up and smiles so big when I whistle, usually along with one of the music toys in her crib.
That's weird, too. I figured that most people find whistling annoying (except the whistler, that is). Or maybe she just loves her Daddie!