Daniel Steibelt, a top pianist in his own right, challenged his contemporary Beethoven to a musical improv duel. Steibelt did believe he had a shot; he was no kid, and had already composed for Marie Antoinette and operatized a successful version of Romeo and Juliet. He showed up to the improv and played one of his own works, for which he’d brought the sheet music. Once it was his turn, Beethoven turned the sheet music upside down and beautifully fucked the piece sideways and backwards, overturing Steibelt’s style all the while like a cat teasing a particularly boring mouse. No one ever challenged Beethoven to a musical improv again, least of all Steibelt, who never again set foot in Vienna.