Thanks again for the great info Dragonfly, and yes I would love to read more on ergonomics!
I was wondering to if playing sitting on a stool might be better for the back, that it might force you to sit up if you feet are on the runs of it instead of sitting down in a chair persay?
Also I heard from a student something about a specialy designed chair for singers to practice in , some kind of posture chair, anyone know anything about this?
I did a search but couldnt find it..
I found this chair, anyone have experience with one of these?
looks like it would make the back feel better but be impractical for things like guitar playing!