http://www.angelfire.com/band/horns/index.html History, care and maintanance, and practice and playing tips. http://www.dwerden.com/bareuph.htm Article on the differences, with a nice comparison chart, pictures, and dimensions of popular brands and models. http://members.tripod.com/~baritoneboy/ Pictures, links, and information about the euphonium and baritone. Also a MIDI and .wav page.