Who was the emperor who fiddled while Rome burned?

There was no Roman emperor who fiddled while Rome burned. This was a misinterpretation of the term "fiddling around". It was applied to Nero by a historian of later ages who used the term to connote that Nero, out of frustration, began doing trivial things just to keep occupied , while waiting for the reports of the fire to come in. Besides, the violin had not been invented in Nero's time.