Hello,
I am completely new to this forum, but I play the irish flute for 10 years. Actually I`m here because I would like to play the modern silver flute...
So to answer some of the questions asked:
- Irish flutes do come in different keys, but to begin with, no question, you need a D flute (that does not mean the flute actually transposes in D, just that its lowest note is D, and that it "natural scale", without the keys, is D major)
- Irish flutes almost all use the simple system, with 6 holes. If some players (like Joanie Madden) do play a Boehm, almost all irish flute players use english style 19th century wooden flutes or copies of them.
- The only flutes I can imagine having "the same key system as a modern silver flute" are Boehm wooden flutes, different instruments
- Actually a lot of things are very different between a modern Boehm and a real irish flute: conical bore, 6 holes "simple system", different uneven scale, and the position of the embouchure hole is very different too: we cover it much more. Closer to that of a baroque flute
- IMHO there IS a huge difference in sound. Very noticeable if you listen to good players, especially in the lowest notes (in general low D, though good 8 key flutes go down to low C)
There is here, among others, a good forum about the irish flute:
http://chiffboard.mati.ca
Hope this helps
Matt