Well, let me start.
I have two friends who wrote a song called "Ball Park Figure". I adapted it a bit and it became a central part of my repertoire.
I played it one evening at an outdoor open mic as part of a three part set. As I walked off stage and back to the audience, a woman stopped me and asked me if I had a tape of the song. I told her I didn't, but that if she sent me a blank tape I would record it on my cassette player and send it back to her.
I gave her my card. We talked a while and then parted. On the way home, I realized that I should have gotten her number as she was quite pleasant to talk to and we both enjoyed music.
That was Friday night. Monday morning there was a blank tape in the mail with a return address. I called her up and asked her out. Her name was Marge. She is my fiancee. That song, "Ball Park Figure", changed my life.
Roger in Baltimore