Complex sentence: In 2013, the Accademia Nazionale d’Arte Antica e Moderna published what is claimed to be the sole surviving copy of the score printed in Florence in 1848 and found in 2011 in the private archive of the Italian pianist and conductor Antonello Palazzolo.
Split into simpler sentences: In 2013, the Accademia Nazionale d’Arte Antica e Moderna published what is claimed to be the sole surviving copy of the score printed in Florence in 1848. It was found in the private archive of the Italian pianist and conductor Antonello Palazzolo.