シュテファン大聖堂
Michael went to Vienna at the age of eight, his early professional career path being paved by his older brother Joseph, whose skillful singing had landed him a position as a boy soprano in the St. Stephen's Cathedral, Vienna choir under the direction of Georg Reutter, as were Johann Georg Albrechtsberger and Franz Joseph Aumann, both composers with whom Haydn later traded manuscripts. By Michael's 12th birthday he was earning extra money as a substitute organist at the cathedral and had, reportedly, performed preludes and fantasies of his own composition. The early 19th-century author Albert Christoph Dies, based on Joseph's late-life reminiscences, wrote: