Live sound
From sixth grade through college, if there was an empty seat behind a mixer I was trying to fill it. No venue too small, no band too loud.
Read: It's Too LoudRunning sound is mostly listening. Many signals in, one mix out, and the job is deciding what the room needs to hear more of and what it needs less of, then doing that without anyone noticing you did it. I liked the physics of it (frequencies, pressure, coverage) and I liked that the last ten percent was taste: exactly how the snare pops and how much the bass bumps.
Every room had one person who thought it was too loud. I wrote about what I learned from them in It’s Too Loud.