3 reasons to see a docter there.
Still it could be a serious problem, and either caused by a bacterial or fugal, infection or will result in one. you may just have soft feet - I do have quite soft feet - well soft skin everywhere really - I drum and play guitar too, but the hands are still softer than the gf's, shes pretty jealous lol , but I am thinking there is a cause, And it should be infestigated
Do you allways wear shoes, I mean all the time, could they just not be getting a chance to dry out, or breath. Don't wear shoes at home, only at work, uni and when going out.
Do you wear clean socks? Yes
Do your feet sweat a lot? Well yes and no. Before any competitive sport I get quite anxious/nervous/excited so they sweat a fair bit and then when you get out there you start sweating more obviously.