QUOTE(jamesic108 @ Sep 14 2005, 08:25 AM)
french horn is a brass instrument! who said its not?
That's certainly the way I think of it, having come to it via tenor horn, Bb cornet, Eb soprano, trumpet and the odd excursion to trombone. However, trying to categorise things rigidly often leads to argument. Most people would think of the bugle as a brass instrument, so it's also natural to put the key bugle with it. The ophicleide is a member of the key bugle family, but can also be thought of as a version, in metal and with keys, of the serpent or the lizard (a tenor cornett). Since the last two are made of wood, it seems a bit odd to call them "brass", even though their embouchure is similar, and most people don't.
Sorting this sort of thing out is sometimes helpful, as in organising an encyclopaedia, but usually pointless, and you do much better to consider the characteristics of each item in detail or, even better, measure them. For instance, teachers who play only trombone will have no difficulty in teaching baritone or tenor horn, euphonium, or bass tuba, and may be very successful teaching trumpet, but are unlikely to be as successful as a specialist would be in teaching orchestral horn, because of characteristics in which the horn differs from the other brass and, in particular, its very different history before about 1800. The period from 1750 to 1800, in which it was more likely to share the concert platform with oboes and bassoons than trumpets and trombones, has made it an honorary member of the woodwind, and its continued presence in the wind quintet has perpetuated the tradition.