It seems believable given the story of the “Radium Girls”, workers who painted radioactive paint on watch dials to make them glow. They’d lick the tips of the brushes when they got too frayed… which eventually led to cancer.
This sounds like something that was made up for a fallout game.
Of course, so does "bombarding myself with xrays and moving around to entertain the audience looking at my bones" and "including uranium in paint to make watch dials glow"
Uranium wasn't used for watch dials, but Uranium Orange is a colour of cermic glaze. It was pretty popular in America from the 1930's to around 1942, when the government needed all the uranium for some big secret project. After the 60's it was made with depleted uranium, instead of natural ore, until someone realized this still wasn't a great idea.
I believed this was real until I searched for it 😂 To be fair to my own credulity, Plutonium Jazz would not be the most insane thing people did with radioactive materials back then. The "medicines" alone make Plutonium Jazz sound pretty tame.
Well... This is jazz... I'm skeptic as well, but what if it was some sort of experimental modern jazz where the musicians would try to predict the next click?
You can't predict the next click, that's what random means. This would never have gotten far enough to appear in front of an audience. They would have tried it at rehearsal and realised it was impossible.