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
St. Elijah Cathedral, Haifa St. Elijah Cathedral, Haifa The St. Elijah Cathedral (, ) also called St. Elias Greek-Melkite Cathedral, is the name given to the Melkite cathedral in Haifa, serving the Greek-Catholics of the Byzantine rite making up the majority of Christians in both Haifa and Israel. St. Elijah Cathedral is the cathedral of the Melkite Greek Catholic Archeparchy of Akka ("Archieparchia Ptolemaidensis Melchitarum"), which was created by bull "Episcopalis synodus" of Pope Paul VI. The cathedral was designed by architect Sammihom Atallah. The construction of the cathedral began in 1938 and ended in 1939. Since 1861 the cathedral of the Archdiocese of