I'd say that the Blackbird requires a fair amount of breath _control_ for the lower octave, because it flips up to the 2nd octave quite easily. But it takes hardly any push or breath-focusing to reach the high notes, and it generally takes very little air to play, so you can enjoy long playing long phrases. If you like sweetness in the high notes, the Blackbird is the best whistle for this, but if you like to blow your whistle with gusto, you'll find its tendency to flip upward frustrating.rap4th wrote:the Blackbird is an awesome whistle. It does not require a lot of breath control and the 2nd octave is very easy to play in.
On the opposite end of the spectrum, the Parks Everywhistle takes a fair amount of air to play, particularly for the high notes. I like to play it when I've been playing my Generation Bb a bunch, because they both encourage me to blow with some vigor. But its high notes are nowhere near as sweet as the Blackbirds; in fact, they're a touch raucous. This may be a skill issue on my part.. I also find this true of my Generation Bb... And i did also find the same true of my Clarke original, and you said you liked your Clarke...
I find the Dixon Trad somewhere in-between, perhaps a little closer to the Blackbird. Though it takes a bit more air than the Blackbird and its high notes are chiffier, the high notes are still comparatively sweet, not very raucous at all, and the whistle stil takes some breath control to keep the low notes from flipping up The trad has a breathier tone than the Blackbird -- I'd say the Blackbird has a lovely blend of purity with a bit of chiff to make it interesting. while the Trad sounds a little bit more like a Clarke original, with a very similar touch of breathiness, yet with a slightly rougher, cylindrical bore sound.
I've never tried an Elfsong.