He studied in Copenhagen at the Royal Chamber under the tutelage of baritone Albert Hoeberg ( 1879 -- 1949 ) and the tenor Hermann Spiro .
Hansen 's initial occupation was as a copper - engraver but he harboured desires to become an opera singer .
Hansen studied in Copenhagen at the Royal Chamber under the tutelage of baritone Albert Hoeberg ( 1879 -- 1949 ) and the tenor Hermann Spiro .
Hansen 's initial occupation was as a copper - engraver but he harboured desires to become an opera singer .