One of my my brothers plays tin whistle. Actually, a couple of us play occasionally, but it's Bill's main instrument when he's playing with the rest of us. He has about four in different keys, plus a low whistle, which has a really beautiful sound...kind of like an Irish flute.
And, as I mentioned, he has one with him at all times. I play a little guitar, mandolin, and I'm starting to learn fiddle. Fiddle is threatening to become as much of an obsession as LOTR, or more, though it the hardest thing I've ever tried to learn. I'm convinced the bow spend all its non-playing time in the case plotting evil things...
I've got two. One in D and one in C. I don't think I could reach the holes on a low whistle.
Which brother? The one that posts here? If so, we have just got to get he and Jen together!! She needs someone that knows how to play a whistle, don't you agree, OT?