Holy Roman Emperor (1658-1705). Like his father, Ferdinand III, Leopold was a patron of music and a composer.[13] He continued to enrich the court's musical life by employing and providing support for distinguished composers such as Antonio Bertali, Giovanni Bononcini, Johann Kaspar Kerll, Ferdinand Tobias Richter, Alessandro Poglietti, and Johann Fux. Leopold's surviving works show the influence of Bertali and Viennese composers in general (in oratorios and other dramatic works), and of Johann Heinrich Schmelzer (in ballets and German comedies). His sacred music is perhaps his most successful, particularly Missa angeli custodis, a Requiem Mass for his first wife, and Three Lections, composed for the burial of his second wife. Much of Leopold's music was published with works by his father, and described as "works of exceeding high merit.