This is something I started to play with while I was recovering from a rather intensely painful surgery. My daughter encouraged me to smoke a little pot to ease the pain. It surely worked. I started to scribble and set it to single song, swapping colors and line width. I paint traditionally in oils, and this was a completely different experience, and I loved it. It has become a relaxing practice, and pot is not necessary to experience its delight. By Kelly Sullivan