Your question is kind of vague. I'm assuming that you mean "multi-instrument" musician. That answer is easy. It's Roy Wood. Put him in front of an instrument and he'll play it. It will be pleasing both to the listener and those that are technically skilled in that area. Too many different instruments and styles of music to list. Sean
Best musician in the world?
A question posed in another thread, in my view, although musicianship is hardly a sport to be measured as such, the most universally prodigious musician is probably Shawn Lane. He is definitely the world's most phenomenal/inimitable electric guitarist. And he is a world-class pianist and saxaphonist as well.