Scheen has sung the roles of Lucy in The Telephone, or L'Amour à trois by Gian Carlo Menotti, Thérèse in the Les mamelles de Tirésias by Francis Poulenc, the First Lady and Papagena in Wolfgang Amadeus Mozart's Die Zauberflöte,[1] Frasquita in Carmen, Vespetta in Pimpinone by Georg Philipp Telemann, Grilletta in Lo Speziale by Joseph Haydn, and Zerlina in Mozart's Don Giovanni.

She appeared with La Monnaie in Christoph Willibald Gluck's Alceste, Francesco Cavalli's Eliogabalo, and Mozart's Die Zauberflöte under the direction of René Jacobs.

She sang in concerts in the Petite Messe Solennelle of Gioachino Rossini, Carl Orff's Carmina Burana, the Requiem of Gabriel Fauré, the Coronation Mass and the Great Mass in C minor by Mozart, and Johann Sebastian Bach's Johannes Passion with the groups Il Fondamento, Ricercar Consort, Café Zimmermann, La Fénice, La Cetra d'Orfeo and Musica Antiqua Köln.

Scheen was a member of the World Youth Choir from 1994 to 1996, which enabled her to make rounds in Latin America, Canada, Estonia, Latvia, Finland and Sweden.

In 1999, Scheen recorded the music of Gérard Corbiau's film Le Roi Danse for Deutsche Grammophon with the ensemble Musica Antiqua Köln under the direction of Reinhard Goebel.