Welcome, Daniel. The bagpipers will be along shortly. But I'd say if you want to play whistle, play whistle. If you want to play bagpipe, play bagpipe. Both whistle and many open-fingered bagpipes use the same basic simple system diatonic fingering, making it fairly easy to translate finger reflexes from one to the other. Breath skills vs. bag skills are a different story, of course.
Daniel Mahfooz wrote:
I don't see what's so hard about customizing a bagpipe with a chanter that has the exact same fingering as the tin whistle.
Probably because you'd need to understand the acoustics of resonant pipes.
A tiny standard D whistle or a fairly large bore low D whistle would probably be a nightmare to reed. Even if you could reed a typical cylindrical whistle body, you're converting an open-end pipe to a closed-end pipe. Which means it will now overblow the twelfth and not the octave - if you can overblow it (over-pressure it) at all. So it won't behave like a whistle anyway. Notably, many bagpipes have only a fundamental compass of one octave or slightly more, and are not overblown.
An exception are the Irish uilleann pipes with a 2 octave range, and a set of open fingerings similar to whistle - which is partly why most uilleann pipers readily play the whistle as well. It sounds like that may be what you are interested in, at least a practice set (chanter/bag/bellows, no drones/regs). Why reinvent the wheel? With the caveat that I've heard naïve attempts to play uilleann pipes like a glorified whistle without understanding piping, and the results are not very pretty.
Another option might be a programmable MIDI wind controller with a whistle-like fingering setup. If you don't care if it sounds like a whistle or a bagpipe, you can make it sound like a glockenspiel.
I guess your query is confusing because: a) If you're already a bagpiper, then you already understand most of the above, and that fingering is only a part of it; b) If you're a whistle player, then you're radically underestimating what is involved in making a transition to any kind of bagpipe. Maybe more information about your music background and your goals would elicit better answers. Best of luck.
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