Klaus Mertens and consistency, Klaus Mertens sang in every piece that required a bass soloist, 190 in all." He is also involved in the project Dieterich Buxtehude – Opera Omnia of the same ensemble to record the complete works of Dieterich Buxtehude, begun in 2005. As a singer of lieder, he has interpreted songs of Claudio Monteverdi, Antonio Caldara, Wolfgang Amadeus Mozart and Franz Schubert among others. He has performed the title roles of the romantic oratorios "Elijah" and "St. Paul" by Mendelssohn and, as music of the 20th century, Paul Hindemith's "Requiem" and Igor Stravinsky's "Oedipus rex". In the classical repertory
Church of St. Elijah, Podujevo Church of St. Elijah, Podujevo The Church of Saint Elijah (, "Crkva svetog Ilije"), also known as Saint Andrew's Church, is а Serbian Orthodox church located on a small hill near the city of Podujevo, in Kosovo. The complex includes an Orthodox cemetery. It was built in 1929, and has been demolished several times, as of 2010, the church has been rebuilt and renovated five times. The Church was shelled and dome was destroyed in 1941, during World War II. Later, after the creation of Yugoslavia, the church was restored by the Serbian residents of Podujevo. Reconstruction was finally finished