European Brass Forum 
Comprised of the European Youth Symphonic Brass Orchestra, the 1st Timofei Dokshizer International Trumpet Competition, and master classes. Takes place September 17 through October 6, 2002 in Vilnius, Lithuania. Schedule and application forms.
http://www.eurobrassforum.lt/Orchestrades Universelles 
Classical music event for young musicians from around the world, held every summer in Brive-la-Gaillarde, France. Site contains program information, musician biographies, audio files, online registration forms, photographs and reviews from previous years.
http://www.orchestrades.com/
Red Lodge Music Festival 
An annual event for students from all over the United States to take part in wind ensembles, jazz ensembles, and orchestras. Takes place in Red Lodge, Montana. Site provides recital schedule, fees and audition information.
http://www.redlodgemusicfestival.org/