 On a few occasions, he starred opposite her, as in the performance of his play "Iphigenie auf Tauris" in 1779.Goethe's "singspiel" "Die Fischerin" was especially important to Schröter.She not only starred in the leading role of Dortchen, but composed incidental music for the play, including the famous opening song "Der Erlkönig," which is quite different from the version composed by Franz Schubert over 30 years later - unsurprisingly, Schröter's version is closer to the early Classical era lied tradition in the style of Zelter than to the Romantic version of Schubert.