A twelve-year-old boy was interested in my flute once. I was gonna say, "You blow it the same way you blow into a Coke bottle to make a note." Then I realized he had probably never seen a Coke bottle, much less hung around, basically doing nothing, and figuring out how to blow into it.

And they call that progress...

To turn to the matter in hand, olddude, a pop bottle can be traditional because you can make music with it. A pop can, no.