Well, maybe I wasn't as specific as I should have been... If your a theory guy who is recording music, playing shows, then I think your music will be stale. If your producing electronic music, and have never picked up an instrument before, I guess your forced to learn about theory, but you can't just make any sound using software programs either. Bjra is right, its all opinion I guess. I this thread title is pretty misleading as well since there are so many aspects of music, minimalist, through progressive jazz. Just because someone has studied theory won't make them have a good ear for music unless maybe they've taken a class where your forced to use your ears or something, BUT even then, thats not something that can really be applied to music just because you can chunk out a few intervals.