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 Paul and St Stephen's Church, Gloucester St Paul and St Stephen's Church, Gloucester St Paul and St Stephen's Church is a Church of England church located in Stroud Road, Gloucester, Gloucestershire. St Paul's church was built between 1882 and 1883. St Stephen's church was built between 1898 and 1900. St Stephen's church was closed in 2010 and the church was merged with St Paul's which became St Paul and St Stephen's church. Closely associated with the church is St Paul's Church of England Primary school located in New Street, Gloucester which opened in 1870. The building was constructed in 1882 by Alfred King with Capel Tripp