A tone poem:
It starts slowly and sleepily at around 3AM with mystical mists and fogs and star and faint moon lights, and then dawn breaks with its sunrise and then street and people noises come in, getting gradually noisier and busier, and then at noon, it comes to a sudden climatic halt, so we all can take a break from it all and have lunch!
If you play the improvisation backwards, you eventually end up at 3am once again....You imagine how...