Schubert wrote nine symphonies. The last one is known as the “Great” symphony in C major. The eighth is called the “Unfinished”. There are only two movements instead of the usual four. A lot of people still argue about why he left it unfinished. Some people even think that he completed it and that the last two movements are either lost, or are now known as movements from a piano duet. We shall probably never know for certain.