I would invent a time machine and go back to the night of 31 March 1837 in the home of Countess Cristina Belgiojoso to hear the two greatest pianists in history

I would invent a time machine and go back to the night of 31 March 1837 in the home of Countess Cristina Belgiojoso to hear the two greatest pianists in history - Franz Liszt and Sigismond Thalberg - duel each other in concert.