After being appointed the bishop in Đakovo in 1806, Antun Mandić established a choir and small orchestra in the Cathedral, and the leader of that orchestra was the famous Viennese musician and composer Jakob Haibel, Mozart’s brother-in-law. He stayed in Đakovo until his death, and at that time he composed 16 masses.
It is little known that in 1806, Haibel got a small clavichord delivered to Đakovo, which was previously owned by Mozart. Haibel played this instrument and composed on it until his death on 24 March 1826. His widow Sofija put his private possessions up for sale and subsequently returned to Austria.