You put in at least fifteen years of work to get to this point: high school, college, and your seven years. Are you sure you want to give up what was something you enjoyed?

If so, consider corporate training, working for an ESC region, or even perhaps a change in subject. It's really quite easy to get a social studies certificate with your music history knowledge and a basic amount of history information (Source: got one).

If you still want to do music, but not what you currently do, switch levels. Go from high school to middle, or vice versa. Take a couple years and teach elementary - it's a blast, and much lower stress. But above all else, if you KNOW it's the situation that's stressing you out, CHANGE the situation.

Don't assume that TMEA has all the postings. Many districts don't post on TMEA at all. Check the ESC websites in the spring as well as individual district website. Apply in the pool.

If you still want to do music but not teaching, maybe consider working as a road rep for a local music store. You won't make nearly the money and you're going to put a ton of miles on your car, but it may be satisfying for you. You could also work in the business side of one of the orchestras or bands - Dallas Winds has a not insignificant staff, and the Dallas and Fort Worth Symphonies have both hired people in the past year or two also. I'm sure Houston and San Antonio, among others, has other places.

Finally, if you have a Masters degree, consider teaching as an adjunct at your local community college.