Klaus Mertens

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

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.