Not sure if it's in the cards for you, but going to a chiropractor was probably the best thing for my lower back pains. Lucky me for being born in an era where bad posture is almost a requirement for our work. It made a world of difference though, as long as you remain diligent.

When you mention said concert -- are you playing in one, or seeing them? It sounds like playing, but I don't want to assume if that isn't the case.