Obscure Renaissance instrument of the week, the mighty theorbo:
You don’t get to see the neck in all its bizarre glory in the video. Here’s a picture. Here’s another. The idea is that it’s a lute with its own bass accompaniment, but in order to fit such a range on a single instrument, the bass strings have to be much longer than the rest. It’s a SUPER-LUTE (and not to be confused with the archlute, which is a similar idea but not as low or unwieldy).