Short history of te Hancock air whistle. Enjoy. Later RJD
https://www.youtube.com/watch?v=E1zbCDHbt5c&feature=youtu.be&app=desktop
Gee, I was wondering, just the other day, why no one ever tried to do make an air whistle before. Little did I know that Hancock did. Very cool, thanks. The revamped one does sound better then the original, at least on YouTube,
Thanks. Good video that also lead me to a bunch of videos of ConnDOT FL9’s 