This video fits into a long list titled “why didn’t I think of doing that?” It’s had over 260,000 views and shows Hal Walker demonstrating the hand whistle. I’m not sure why he calls it ancient, because surely his hands are the same age as he is?
He says that he makes a living hand whistling, I have no idea how, but it’s quite impressive if he does. I suspect that it’s just part of a huge repertoire of musical instruments that he uses.
I’ve hand whistled since I was a child, but never been dedicated enough to learn a whole tune:
(This video made me giggle, not sure why, please let me know if it had the same effect on you)