I'll mention only one case. A few years ago, I went to a meeting of the local folk club, and a nice young lady sat beside me. As the songs went around, she refused to sing. Finally, I pressured her and she did sing a beautiful unaccompanied native American song. After the session she said she wanted to learn to play guitar, so I volunteered to get her started. We spent a few sessions working on basic chords, then I lost track of her. One day I was driving though South Freeport and I saw a sign that said this lady was going to perform there the following weekend. Naturally, I made it a point to be there. I arrived as she was singing and playing the guitar in public!
She has been at it ever since, and now she blames me for getting her hooked!