Sorry, I misread that one..windshieldbug wrote: Wasn't suggesting that A was, only Bb!
And my point wasn't about any PARTICULAR pitch, just that named pitches MOVED AROUND A LOT!

Pitches did move around a lot, but in the 19th century the range was less than in the 18th, especially in the low end of the spectrum. If you see the lists in this article and the articles you quote, you'll notice that by the 1830's they didn't get below 430 anymore. The only pitches above 460 mentioned at that time are church organs which were built that high for economical reasons (higher pich = shorter pipes = less material). Pitches meant for orchestral use are all in the range of 430-460.
Pitches moved around a lot, but at the time the valved brasses became widespread they stayed within that 1/2 tone range.
Well, there is some variation, but not in such a wide range as you seemed to suggest.Which is why they felt it necessary to convene a French Commission in 1859, and a formal Vienna Congress in 1887?corbasse wrote: I've never played one of Sax's original instruments, but I've played plenty of other 19th century instruments. The pitch of those were all still in the neighbourhood of the pitch we expect. This is especially easy to see with natural horn crooks because these are marked with the pitch they're supposed to produce.
With such big variations the extreme ends of crook sets wouldn't work anymore because they'd have inches of tubing too much or too little.
It's interesting by the way that even in complete crook sets from a single maker the different lengths of crooks, and even position of the tuning slide can result in dramatic differences in playing quality. That's also why I think the instrument series in Bb/Eb, or better, the instrument series based on 9 ft/12 ft, prevailed: because of the playing characteristics and sound quality. There have been plenty of experiments with other pitches and crook systems which didn't survive.
I"m agree about the length; I know they also made alto AND bass sackbuts in the same period they made tenors. But that's just slide length; one can always make the bell section a little shorter or a little longer. And a trombone that reads concert pitch shouldn't have to worry about transpostions... and why transpose at all? Why not just teach the trombone as a C treble clef instrument the way it's taught as a C bass clef instrument?corbasse wrote:For the sackbut I like to believe the statement that Bb is just the right pitch for the average arm. Then why sackbuts in A you ask? (It is modern pitch A...)
A=415-420 was a widely used pitch in the 18th century. Trombones were used extensively in church music to double the choral parts at that time. (This also explains why they read concert pitch.) Composers tended to use keys with few accidentals at that time. Having a sackbut in modern day Bb would have them play on what was for them a B natural instrument. I can only imagine the horrific slide movements you have to make if you are constantly playing in keys with masses of sharps...
This IS a very interesting discussion!
For the sackbut, what I meant to say is that the actual pitch of the instrument didn't matter because they were reading choir parts all the time. It is handy however to use an instrument with such a length that
A) the slide doesn't fly off if you overextend your arm just a bit too much
B) you can use the first position more than once in a piece

For the reading stuff: at that time all musicians were expected to read all clefs and all transpositions anyway.
