Yesterday I played in Pennsylvania, and in a few minutes I have to go to Darkest New Jersey. It's not my main job but for some reason I just can't stop. Being a musician can be rough if you work for the wrong people, but sometimes those people pay well. I never made more money as a musician than I did when I played in a wedding band. I did that for a few years when I was a new teacher making 13K a year. I don't do it anymore, though. Watch the video below and you'll get an idea why.
It reminds me very much of how Joel Klein runs NYC schools. I hope, for your sake, your immediate supervisors are not like the one below. But I've seen a lot of school supervisors just like this, and I'm sure you have too.