From the Catholic Encyclopedia: The older authors, Tacitus and Suetonius, say clearly, and the testimony of all later heathen and Christian writers concurs with them, that Nero himself gave the order to set the capital on fire, and that the people at large believed this report. Nero was in Antium when he heard that Rome was in flames, he hastened thither, and is said to have ascended the tower of Maecenas, and looking upon the sea of flame in which Rome lay engulfed, to have sung on his lyre the song of the ruin of Ilium.
BI - POLAR BEAR
i just got back from an xtensive web search, even went to the Louvre in France. The problem seems to be that no serious artist has portrayed Cesear Nero fiddling while Rome burned because the fiddle was not invented at that time . HOWEVER, i had my best avalible search's with Ask Jeeves .com . i hand the baton to you because my attention is needed elsewhere.