I should stop thinking about this, but still...how does it work?

Whistling is weird.

I don't think about the notes I'm trying to hit.

I just think the song and make the song and my mouth seems to just know how to do it.

Sure, sometimes the notes aren't quite right, or a little wheezy, but the song is there.

There's no humming.

There's no singing.

I just think the song and I whistle the song.

And the song is real.

I'm sure there's a scientific explanation.

But it's also magic.