Complex sentence: Julie ("Giulietta ") Guicciardi (23 November 178222 March 1856) was an Austrian countess and briefly a piano student of Ludwig van Beethoven, who he dedicated his Piano Sonata No.14 to, which is now commonly known as the"Moonlight Sonata".
Split into simpler sentences: Julie ("Giulietta ") Guicciardi (23 November 178222 March 1856) was an Austrian countess and briefly a piano student of Ludwig van Beethoven. He dedicated his Piano Sonata No.14 to her, which is now commonly known as the"Moonlight Sonata".