When water and oil dont mix
It starts slowly, with only a few instruments. Gradually speeds up the tempo, gradually gets louder, adding more instruments....but the same tune is repeated over and over again. The single the,e achieves unity. The tempo and dynamic changes (Loudness, speed) give is the variety.
David Alfaro Siqueiros was a Latin American artist that had the belief that every piece of art should be public.
I believe it would be an operational definition.