My high school drawing 1 class just finished these abstract pastel drawings on black paper inspired by a music sample of their choice. During the project I emphasized using line variation. pattern, pastel techniques, and color. Looking back I really didn't emphasize background space and wished I would have to some of the students who didn't really use the paper as well as the students images I posted above. It was a fun project and the results my students came up with I was impressed with over all.