Turns out my audience was a little more hostile.
The first guy loved it, but it all went downhill from there. My favourite was the one who repeatedly shouted “no” at me before walking away, because he was one of the few people who didn’t immediately stab me. This was possible thanks to the LuteBot mod and Thomas Jonker’s MIDI collection, who I will repay by invoking the Law of Surprise. Same for Reddit user “Mozerath”, whose work I modelled my Geralt costume after in the hope that people would actually recognise the damn song. Or at least pause before chopping my head off.