With the Dutch musicologist Leo Riemens he co-authored the Großes Sängerlexikon, the standard reference for opera singers.
Born in Gangelt, Kutsch studied medicine, was drafted and participated as a soldier in the Russia campaign of the Second World War.
[1] Together with the Dutch musicologist Leo Riemens, he published a small biographical dictionary of singers in 1962[1] under the title Unvergängliche Stimmen (Immortal Voices).
Under the title Großes Sängerlexikon (Great Singers' Lexicon), it was substantially expanded with the collaboration of Hansjörg Rost[4] and in the current edition comprises seven volumes with detailed biographies of 18,760 singers from the Renaissance to the present day.
In addition, the biographies contain brief mentions of important milestones, a description of the voice, as well as bibliographical references and major recordings made if any.