I did this as my first finished piece with my new tablet. I used http://new.weavesilk.com/ and GIMP to make this. it's synesthesia art done while listening to Replica, from the Ghost in the Shell: Stand Alone Complex Solid State Society OST.
really, it was awesome doing this. I had more control making it and the new headphones are EPIC AWESOME, the sound quality is enough to make me just sit there with my eyes closed and forget everything else sometimes.