Although you might be inclined to think this technique was achieved with lighting and keying in postproduction, the Berlin-based Pretty Monkey Studio clarify:

We shaved three monkeys and tricked them into believing they are human, dressed them in spandex catsuits and gave them hats. Put them in a room with a bicycle, super-glue, a selection of musical instruments and some other thingamajigs and asked them to make a video for Jamie Cullum’s new track “wheels”. Despite the rumours, we most definitely DO NOT get our monkeys high on hallucinogenic drugs.

All jokes aside, the work is beautiful in its minmal approach. Check especially the laying down of pieces of fabric to simulate the “shadow” of the “window”. And as is often the case with some of the best analog technique, the creators can’t resist a peek behind the scenes in the final seconds of the video.