I'm only now reading this after a couple weeks' traveling (during which time I was not eaten by a bear and didn't even see one) and another trying to catch up at work, so I'll offer just a quick note on drum corps, particularly for those who didn't click on that link to video of the 1996 championship performance by the Phantom Regiment (of Rockford, IL), which excerpts Shostakovich's The Limpid Stream, Symphony No. 1, and Symphony No. 5: more than half the group's percussion section does march. Among the 128 members of that corps were seven snare drummers, three tenor drummers, and five bass drummers moving on the field, with another eight percussionists on the sideline playing the tympani, trap set, xylophones, marimbas, bells, chimes, concert bass drums, gongs, and cymbals. No triangles, as far as I can tell. Some ensembles--most notably your neighbors, the Santa Clara Vanguard--also have a dedicated set of cymbal players who march with the drummers.

That particular show was my introduction to the music of Shostakovich, and it was in drum corps adaptations that I first met the work of Dvorak, Schoenberg, Bartok, Kodaly, Ginastera, Walton, Hanson, Piazzolla, Glass, Rutter, and several other classical composers (plus a good number of jazz works), which probably explains why I don't hear the arrangements as fetid! (Unless that word has a positive connotation?) The website at this link does a decent job of listing corps repertoire back to at least the 1970s, for those curious to know if a particular piece has been played in this format:

http://www.corpsreps.com/index.cfm

-MTD/neb