(Way) back in college I was courting my wife-to-be. She had a Goya classical guitar she was having trouble tuning, so asked if I could help. I took her chord book, tuned the guitar, spent 15 minutes learning how to do a C, F and G7, then hammered out a pretty decent Wildwood Flower. I had never touched a guitar before and, after that one, not again for almost 40 years. She said a four-letter word, put the guitar in her closet, and never again went near it, probably saving both herself and those around her endless misery. After lo those many years I decided to start playing a 12-string. I had never touched one, or seen one played except by Pete Seeger in a mid-60's concert. I did some research, ordered a Guild on the internet, got a book, and started playing (kinda), and (very) gradually improving, though it hasn't been that many years. I'm not Leo Kottke, but I can certainly plunk a tune and accompany a song. To this day, I've never touched a 6-string acoustic guitar.
I could do that stuff because I was born to it. My trigonometry stinks. I can't draw a straight line, much less an attractive picture. And, Art? Ho, ho. Foreign languages elude me. Never could memorize, and I was always a mediocre student. But, I can play stringed instruments and croak a tune. Go figure.