I’ve been playing a “Mel Bay” whistle by Clarke (the cheap version of a mass produced children’s whistle). When I first started, I had a hard time consistently getting the low D and E, especially if I wasn’t in a state of zen-like calm. Of course, this has been improving with practice. The high end of this whistle has proven to be clear and piping and very responsive. I am able to play the high D with completely closed fingering and not crack the note, and I never had a problem with this, even when starting.
Because I liked the Susato Low-D that I had a few years ago, I went ahead and got a Susato “Dublin” small bore in D. Being larger bore than the metal whistle, it requires more air and is easy to sound the low D and E, as well as get up into the ear piercing 3rd octave. It is also much louder. The whistle is much richer, which is great on the bottom end, but sounds a bit shrill on the upper end. The walls of the Susato are thicker than the Clarke, and thus the finger holes are larger.
The problem I am having is that the Susato sounds like it is always breaking notes, but gets much worse when playing at speed or crossing the register break. A (moderate speed) reel that sounds jaunty on the Clarke is mangled on the Susato, sounding as if every note is a slide because of the breaking. I am specifically thinking of the middle of part A of Salley Gardens Reel, where it goes dbebdbab. I’m using a steady breath and no tonguing (that is, I don’t feel a register break here on the Clarke, like I do between the E and F#, and I’m not articulating so I can work on clean fingering).
So, any ideas? I’ve tried applying more air and less air, but that didn’t seem to fix it. I’ve also considered that the little sounds are actually squeaks and slides because the bigger holes are requiring more precision to get them covered properly.