Book excerpt: There seems to be an essential relationship between the performance and the scholarship of the German Lied. Yet the process by which scholarly inquiry and performative practices mutually benefit one another can appear mysterious and undefined, in part because any dialogue between the two invariably unfolds in relatively informal environments – such as the rehearsal studio, seminar room or conference workshop. Contributions from leading musicologists and prominent Lied performers here build on and deepen these interactions to reconsider topics including Werktreue aesthetics and concert practices; the authority of the composer versus the performer; the value of lesser-known, incomplete, or compositionally modified songs; and the traditions, habits and prejudices of song recitalists regarding issues like transposition, programming and dramatic modes of presentation. The book as a whole reveals the reciprocal relevance of Lied musicology and Lied performance, thereby opening doors to fresh and exciting modes of interpretative artistry and intellectual discovery.