Harvest of Harmony 2017 - Lincoln East Marching Band 

The Lincoln East High School marching band performs their 2017 field show, "Rhapsody in Spartan Blue," at the Harvest of Harmony competition in Grand Island, Nebraska.
East has 255 students in their high school band in 2017-2018. The freshman band makes up 80 of those. Field performances like this one are performed by the 175-member upperclass band (10-12th graders).
The built-in mic on my Canon 7D mk II doesn't do justice to the wall of sound.