Sounds farthest away from me: the wind outside of an open window, the buzz of the overhead lighting, the occasional sink/toilet outside of the room.
Sounds at medium range: the door occasionally opening and closing, quiet side conversations, the occasional bang of a foot or a phone, people sniffling/moving around.
Sounds closest to me: contemporary music playing, my fingers tapping on my phone, the occasional buzz of my phone, the choreographers teaching/counting to the music.
The general sound level is a little above average at most times, but back to average/quiet when the music/dancing is paused. The amount of sound activity is mostly sporadic, but constant and usually unchanging when the music/dancing is happening.
Description word: active.
Essential sounds: movement, counting, and contemporary music.