I am, no doubt, the worst whistler of all who have responded but I enjoy it from time to time. I own two Generations, D & C. My wife owns a D Oak whistle, which I despise. Compared to the Generation, the second octave is more dificult to play and has annoying overtones.

Mostly I am writing to fill in a little info to Barbara's response to Murray. Each whistle can actually play in two keys, the one it's labeled and the one a fourth above that. For example, D and G. When playing a C in the key of D (C sharp) you play all holes open. When playing it (C natural) in the key of G there are a couple of fingerings (cross fingerings?) that gets you there. Other than that, you can half-hole to get chromatics, but it's difficult to do rapidly.

Jon W.