I made an MSU pack, but this time it's not one of my packs for ALttP Randomizer -- this one puts music from the Katamari Damacy series into Earthbound PK Scramble, which are tastes that should go great together.
I first made something like this happen by accident, when I loaded my Katamari MSU pack for ALttP in a Mystery Mystery seed that was actually Earthbound. The tracks landed in pretty arbitrary places, and half of them were missing and fell back to the vanilla game's music. It was still great.
Let's see how well it works when I actually try to choose appropriate music for each track. Going live soon with a rando run that tests the pack for the first time: