In the Callichio forum, Larry, Noel & others have posted stuf about the development of styles and instruments to suit those styles on the East and West coasts and London.
I found some neat stuff about the music industry in Canada when cruising around the True North Brass' website today. (some interesting sound clips too).
Here's a quote: I had met a piano player at the Manoir who had been studying at Baltimore's famous Peabody Institute (of Music) and he recommended that I go there. I won a scholarship at Peabody, where my teacher was the renowned virtuoso Lloyd Geisler, who taught a whole lot of studio and symphony trumpeters. Geisler used to say "Get it right the first time, not the second. If you miss, put the horn down for a half hour, then try again. Only the first time counts. Golf is the same."
To read the whole interview and comments:
http://www.truenorthbrass.com/greyNotes.php