Remixed Multi-tone Whistle

Thanks go to conanh for his super cool, "pea-less" 2-tone design!!

I made a couple of his originals (and they are great!) but I noticed that they didn't seem to have two distinctly different tones. I watched a few youtubes of whistle builders who made their whistles out of wood, and they demonstrated that, by increasing the size of the output hole, the tone is changed. (To be fair, they also increased the volume of the chamber- it appears there are a lot of variables!)

I changed cona