Kaspar (also Caspar) Koch studied voice in Köln. After military service in WWI, he started his career at the Opernhaus in Köln. He was there from 1917 to 1926.
This was followed by an engagement in Düsseldorf (1926-1927). In 1927, he sang Froh at the Bayreuth Festival.
1927/28, Koch sang at the Berlin Krolloper, where he sang a small role in Fidelio in the
opening performance of the theater. In 1928, he sang in the German premiere of Oedipus rex.
His repertory included Tannhäuser, Parsifal, Max, Canio and Turiddu.
It was prophesized that Koch would have a career as a heroic tenor, however he stopped singing in 1928 and
started teaching voice instead.
He recorded for Vox.
Reference: Kutsch and Riemens