bunch of circles

This is an untitled drawing by Dan Cristensen that was done in 1968. From what I understand from research, he began using spray guns to draw colorful stack, loops, and lines on his paintings that were among the most original abstract paintings. I really like this one because its so simple yet somehow is still great. It looks like he just took different colors and made a bunch of swirling circles on a canvas, kind of similar to my art technique when I was 4.