I do not necessarily agree with Slava Anosov. I shoot ALOT of concerts and can tell you that the Torso shot is a classic for mag's and sometimes does cut off a low slung guitar. You could have rotated the camera 90% and shot perpendicular/portrait instead (thereby capturing more of the musician), but you would have lost the effect of the ambient lighting.
I think it's a decent photo. Check out some of my shots for comparison: