The Glogauer Liederbuch is a forgotten treasure, a rich repository of fifteenth-century music. It contains 292 songs, devotional chants and instrumental pieces which were performed by educated enthusiasts or students, not by professional musicians. The collection also includes several pieces known as Schwanz' (tail), which probably designates them as dances (schwanzen' being a derivation of tanzen', i.e. dancing). The music sung or played in this Lower Silesian monastic community originated in many different countries, but all the pieces show a richly developed standard. The Liederbuch is the oldest known set of part-books from central Europe.Sabine Lutzenberger is a pioneer in the field of medieval song. She first acquired her reputation as a long-standing and influential member of the Augsburg Early Music Ensemble. Martin Hummel had his musical training in W?rzburg and at the Schola Cantorum Basiliensis with Kurt Widmer and Ren? Jacobs. He teaches at the University of Music in W?rzburg.