Here is a prompt for you. This actually happened the other day. My wife and I were at a guitar store doing a little shopping when in walks this completely unassuming and obviously homeless guy. He walked into the acoustic room where my wife and I happened to be. I was playing a little bluegrass when he asks if he could listen. He then picked up a guitar and began playing. He was pretty rusty but after a few minutes had a few chords worked out. Then he opened his mouth and began singing. We were blown away.
Just curious. How bout some flash fiction with this as a prompt? Anyone feel like sharing. You can actually get it started here and supply a link to your blog where you finish it. Might be a good way to generate some traffic.