Back pain often involves stomach muscles. You might also consider strengthening your stomach muscles with applicable exercises. So when you sit tall with a straight back, you are also relaxed and balanced on the bench (on your "sit bones").
They all say that people should play with their backs as straight as possible. My back starts hurting after a while if I keep it straight. Is it all that necessary to keep your back straight? (I have noticed plenty of amazing pianists playing without a straight back) If, however, it is necessary, what can I do to fix my problem? Or am I totally on my own? (As its "my" back after all, hahaha).
They all say that people should play with their backs as straight as possible. My back starts hurting after a while if I keep it straight. Is it all that necessary to keep your back straight?
straight as possible for you to be at ease while at the piano. But dont slouch. Stay in control
Backs are not straight--the spine is naturally curved in an "S" shape. Shoulders too far "back" is no better than slouching. "Sit straight" should mean a balanced and natural-feeling posture. Good posture should not hurt.
It's assumed people already know this fact. But when most people say "straight back" it means sit up straight, but this does NOT mean a balanced and natural-feeling posture. People think unnaturally uptight.