I play guitar and keyboard (well a bit rusty on keyboard) but I also do loads of vocal work in different places.
And yes, I would say that being a musician gives me the edge on picking up tricks. However as a guitarist I get tough bits on the tips of my left hand fingers which is a real nuisance for DL sensitivity! (anyone else get that?)
a tip which may help people is a new gadget I just picked up, though a bit pricey. I get bad wrists due to weight training for the last 20 years, and playing guitar was aggrivating the problem. I got hold of something called a powerball
http://www.powerballs.com/?aid=byron0512 which has really helped. I have also noticed that my palm strength and agility has increased very quickly using the gadget a couple of times a day.
guitar playing has helped magic, magic has helped guitar playing, and the powerball has helped all of it!
If you are reading this and are not a guitarist/keyboard player here are a couple of tips for you to increase your strength and agility.
1) Bend your right arm across your body from the elbow, palm towards you. Put your left thumb on the inside of your right forearm, and (making your left hand into an arch) place your left ingers on the outer side of your right arm. It looks a bit like you are playing a guitar and feels a bit like making a spider. Now keeping all other fingers and your left thumb imobile, raise your 1st and ring finger on your left hand away from your right forearm (keep gripping with the other fingers), Put them down and raise your middle and little finger. Alternate as quickly as you can between these two positions. Repeat on the other arm.
You can then progress to try different orders of fingers being raised one at a time. If you count the fingers one to 4 then try 1,2,3,4; then 1,3,2,4; 1,4,2,3 etc.
2) Get a ball the size of a tennis ball. You can try this on different softnesses of ball until you find something you like. Hold the ball with the tips of fingers and thumb (it mustn't touch the palm). Now without letting go of the ball and keeping the arch in your fingers squeeze the ball as hard as you can, hold for a count of 4 and release. do this a number of times. Then try the alternate fingering from 1 (again, don't drop it). You should find that the pressures change and your agility will imrove as well as palm strength. Not quite as effective as a powerball but a lot cheaper!