[1][2] Huehn sang many Wagner roles, including Wotan in Das Rheingold and Die Walkuere, Donner in Das Rheingold, the Wanderer in Siegfried, Gunther in Goetterdaemmerung, Wolfram von Eschenbach in Tannhaeuser, Amfortas in Parsifal, Kothner in Die Meistersinger von Nürnberg, Kurwenal in Tristan und Isolde and Telramund in Lohengrin.
[1] He also sang the role of Robinson in the Met's premiere of Cimarosa's opera Il matrimonio segreto on February 25, 1937.
He served as a ground control officer in the U.S. Marine Corps during World War II after enlisting in 1944, holding the rank of captain.
[2] After his discharge he returned to the Metropolitan Opera for the 1946–47 season, but reports of the time indicate that his once-powerful baritone voice had all but faded.
[2] His pupils included singers Philip Booth, John Glenn Paton and Sylvia Stone.