Electronic music production is alot like web design/development in that you start with a completely blank canvas, and then you tweak and change tiny paramaters over and over again until you get a product you're satisfied with. Overall I think the major personality trait that lends itself to both web development and music production is being comfortable with long periods of isolation/introversion, blocking out the world to see what your mind is really capable of. An interesting look into this is ReGeneration (on hulu) where you really see Pretty Lights buckle down and do some work on a track with only a laptop and a pair of headphones. He's alone, in a corner, really tapping into his inner self, which is what I think alot of hackers really are doing when you get down to the root of it.