TSO, Riverdance, Celtic Women, and Bands of America Grand Nationals. The latter is a national gathering of some of the best high school marching bands in competition. It is amazing that high school kids can achieve such a high level of musical and marching arts. If you are ever in Indy in early November, check it out.
Our local high schools' marching band (three high schools, one marching band) competes in this. They won it in 1999. I tell you, sometimes I think the marching band wags the dog at the high schools. The kids in the band, and their parents, are extremely dedicated.