Basilica della Santa Casa
Giacomelli was born in Piacenza. In 1724 he was named to the post of "Kapellmeister" to the duke of Parma. Beginning with the first performance of his opera "Ipermestra", in 1724, he became one of the most popular opera composers of his era. Between 1724 and 1740 he composed 19 operas. His best known opera is "Cesare in Egitto" of 1735. He also wrote a deal of sacred music, including eight psalm settings for tenor and bass, and some concertos with continuo. In 1738 Giacomelli again became "Kapellmeister", this time at the Basilica della Santa Casa in Loreto; he died in Loreto in 1740.