[TOMT][YouTube Video] Two people making "odd" music with a guitar that is lying flat on a table in a park

I think the video was a man and a woman. They are sitting across from each other at a park table. The video begins with them alternating sounds, pretty slowly. So one plays something, then the other. They play the guitar strings but also use its body as a drum. Eventually they start overlapping and playing faster.

I think there were some sort of small percussion instruments on the table as well, some sort of bells maybe?

I wouldn't call it a music video, though it technically might be. Almost more of a jam or exercise, definitely some (respectfully) music nerd stuff.