Back when I did collage I was fascinated by the idea of layering images on top of each other to create textures. I was particularly fascinated by line images and those could be mathematical equations, technical diagrams and, the best ones were, sheet music.

On this image, which I created as a background for a promotional mailing, I even added a couple of leafs. This was pretty typical of the type of work that I used to like to do. 

All of the elements were scanned and assembled in Photoshop.