Okay, so I was Googling slide whistles - don’t ask - and in the course of my search decided to see what Wikipedia had so say. Yes, I was pretty bored. Anyway, the entry had this:
(like the clarinet, the only closed-end, cylindrical Western orchestral instrument)
Looks like the revision of 2 December 2005 by Gary Cziko was responsible for that gem. Much of it seems to need a re-write. I will edit it a bit later (unless someone else does) but is does not seem like letting it sit for a while longer will hurt anything.
That is the crux of my unease. That, and how can there be two “the only closed-end” wind instrument (singular intentional)? Of course the whole thing can be chalked up to careless punctuation and delivery. Or not.
Well, reading a little more than I initially did, the article said the slide whistle had been used by classical composers. The article also mentions the Hoosier Hot Shots. I remember hearing them on the radio when I was about three or four years old. My grandfather listened to all the barn dance shows from Cincinnati and Chicago. “Are you ready, Hezzie.”
It’s the mouthpiece end that’s acoustically closed. Has nothing to do with real open- or closed-ness, just where the nodes and antinodes of the soundwaves lie. Puts them in the same category as ocarinas, whiskey-jugs, many organ stops, and Swanee whistles. Yes, there is a sonata for slide-whistle (PDQ Bach, from the Yakima years), but you’ll probably find a concerto for bodhran if you look hard enough.