Wow! Talented guy! I really had no idea that you played other than guitar, so this surprises me. Very cool, of course.
Well, keep in mind I never said I play them WELL.....
It's mainly a thing of longevity. In mid-April it will be 63 years since I started music lessons. I started at 4 yrs 10 months of age. If you do something long enough you can get good at it. Music, cooking, welding, woodworking, plumbing, whatever..... if you do it and pay the dues that come with learning, you will get to a point where you are proficient.