“The Other Mozart” is Franz Xaver, son of Wolfgang Amadeus, who was born in the year of Wolfgang Amadeus’s death, 1791. Franz Xaver lived into the era of high romanticism and died in 1844. Franz Xaver’s lineage, some enthusiastic early reports from his teachers (not least Salieri!) and the influence of his mother, Mozart’s widow Constanze, ensured that Franz Xaver’s talents as a pianist and composer allowed him a career. He grew up and lived his last years in Vienna, but spent most of his adult life in and around Lvov (in present-day Ukraine). Constanze complained of his easy-going nature; whether this was the cause of his limited success is not known.