I'm not sure if this goes in technique or not, but if it does, please feel free to move it, I won't take it personally Lately my right shoulder has been killing me. I don't do heavy lifting or anything funky like that, but it's just starting to hurt. I think it's coming from my bass playing. Mostly I play sitting down, with my bass sitting in my lap. It doesn't feel uncomfortable at all for me and the bass is at a nice, even height. But could I be doing some damage to it? Here is an image of my position while playing: A friend of mine is doing massage therapy training so I was thinking of asking him to try working on it, but I don't want to put myself back in the same position a few months down the road. Typically, I play about an hour a day, sometimes two, though I've been known to have three or four hour spurts, or sometimes three or four one-hour sessions throughout the course of a day.