Pokeflute

I was making some Snorlax Google Nest holders for a coworker and I was asked about a pokeflute. I found this one on Thingiverse but it looked problematic when I put it in the slicer. Since it is basically a bunch of geometric shapes, I went and modeled it myself from scratch. Unfortunately, this model also doesn't “work.” Covering some of the holes and blowing will change the pitch, but it doesn't play like a flute or whistle. It's just a different pitched exhale. Normally I'd re