"If, for example, Bo Diddley sang a Mozart aria, y'all might be on the floor too."
Obviously it was just bad luck that Bo Diddley would have come up here in a hypothetical example of dubious performance just a couple of days before his death, but reading an article linked in the obit. thread, I came across this:
"He [Bo Diddly] then patches his instrument into a guitar synthesizer and begins playing Bach on the strings, ... "
Maybe the idea of Bo Diddley doing the Mozart aria is not so far-fetched ...