I actually remembered a dream on waking this morning!

I visited some guy’s basement recording studio. He was a hoarder. He had hundreds and hundreds of thousands of dollars of gear there, amid trash bags and piles of instruments. He said his dad bought it for him. I picked up a bass mandolin (not an octave mandolin, which I have, but some kind of weird hollow-body electric “bass guitar” mandolin thing) and started playing a funky bass line. He recorded it.