Do you have any idea how long it took me to figure out what I was looking at in these pictures?😅
I have zero experience with instruments and I just found these pictures oddly familiar. That combined with you mentioning sound box is how I figured out after almost 20 minutes of staring that that was a guitar’s soundboard(unless even now, I still haven’t gotten it even though I think I do).
Oh, well. That happens. The mystery adds to the experience.
It looks really weird if you don't have a clue about instruments, but none is need to understand it.