I've taken lessons in both guitar and orchestral bass. I was no good at either, really, and entirely too unsure of myself. Both were back in elementary school.
I tried to learn the chanter in order to play the bagpipes, but the only sounds I could produce sounded like a dying cow.
I can play the
bodhran, the
pennywhistle, and the
jaw harp with varying proficiencies. All three rely more on innate musical talent more than learned techniques, I feel. I also sing passingly well.