I always wanted to create my own handmade fabric design. Past attempts with paintbrush and fabric paint were a failure. So usually I create some vector art and then go to a t-shirt stamp shop and print it on apparel with the heat transfer method. During this holiday season however, I discovered that some brands of permanent markers can be used for drawing directly  on garments. And I REALLY loved markers since the day I went to Graphics school. I grew impatient trying to figure what to design and thought "what the heck, let's rely on the good ol' automatic writing".
And this abstract music doodle came out. 

Fat bloke wearing the sweatshirt (me)