Bolster Ballad isn't TM dump if you have the TM. It's dump in the lower levels where, since grinding isn't hard/long, you can repot as needed, but in the high levels, having a skill that cuts MP but a fair amount, is useful, and can allow you to grind longer/harder.
Also, it looks a lot better than it had at first, but don't just stop there. Keep making it better and better.
EDIT: Did not notice that you had gotten that part.