Klaus Mertens (born 25 March 1949 in Kleve) is a German bass and bass-baritone singer who is known especially for his interpretation of the complete works of Johann Sebastian Bach for bass voice.
Klaus Mertens (* 25. März 1949 in Kleve) ist ein deutscher Sänger der Stimmlagen Bass und Bassbariton, der vor allem für seine Interpretation der Werke von Johann Sebastian Bach bekannt ist. (de)
Klaus Mertens (Kleve, 25 de marzo de 1949) es un bajo y un bajo-barítono alemán que es especialmente conocido por su interpretación de las obras completas de Johann Sebastian Bach para bajo. (es)
Klaus Mertens (born 25 March 1949 in Kleve) is a German bass and bass-baritone singer who is known especially for his interpretation of the complete works of Johann Sebastian Bach for bass voice. (en)