Franz Xaver Wolfgang Mozart (July 261791–July 291844) was a composer and pianist, a son of Wolfgang Amadeus Mozart and sometimes called Wolfgang Amadeus Mozart himself. His father died before his first birthday, but he nevertheless received excellent music instruction: his teachers included Antonio Salieri and Johann Nepomuk Hummel. In the 1820s, Mozart was one of 50 composers to write a Variation on a theme of Antonio Diabelli. He never married or had children.