This popped up for me on YouTube Music, and it tickled me.
Using the deck prism 
this post was submitted on 11 Sep 2026
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oh i've never heard of deck prisms before, that's clever as shit (the prism itself, but yeah also the album cover)
A deck prism, or bullseye, is a prism inserted into the deck of a ship to provide light down below.
For centuries, sailing ships used deck prisms to provide a safe source of natural sunlight to illuminate areas below decks. Before electricity, light below a vessel's deck was provided by candles, oil and kerosene lamps—all dangerous aboard a wooden ship. The deck prism laid flush into the deck, the glass prism refracted and dispersed natural light into the space below from a small deck opening without weakening the planks or becoming a fire hazard. It required just a 4 inch opening.
TIL!
I also enjoy the bluegrass version
I found a YouTube link in your comment. Here are links to the same video on alternative frontends that protect your privacy: