After earning a degree in violin performance from Ohio State University, she pursued vocal studies at the Cleveland Institute of Music.
[1] In 1947, she sang the New York premiere of Aaron Copland's In the Beginning with the Collegiate Chorale and conductor Robert Shaw.
[2] In 1951, Tangeman created the role of Mother Goose in the world premiere of Stravinsky's The Rake's Progress at La Fenice in Venice.
[3] The following year, she performed the role of Dinah in the world premiere of Bernstein's Trouble in Tahiti at Berstein's Festival of the Creative Arts on the campus of Brandeis University in Waltham, Massachusetts, to an audience of nearly 3,000 people.
[4] In 1955, she performed the role of Teresa in the American Opera Society's production of Vincenzo Bellini's La sonnambula at Carnegie Hall.