Benjamin Bagby is a singer, harper, and groundbreaking performer of medieval music. Educated at Oberlin and the Schola Cantorum in Basel, Mr. Bagby founded the ensemble Sequentia with Barbara Thornton in 1977. This group takes an innovative approach to medieval repetoires, especially with respect to their treatment of mode: they rely on the harmonic qualities of their voices to guide them through the different modes. Sequentia has released many fine recordings, most of them on Harmonia Mundi. During the 1990's, the group specialized in the music of Hildegard von Bingen; many of their most famous recordings are from this period. The group has also performed music written in the 12th century from the musical centers Santiago de Compostella, Aquitaine, and Notre Dame. More recently, Sequentia has been performing music from other areas of Europe: they have recreated the ancient performance practice of the Icelandic Edda and German music from the 10th and 11th century on their recent recording "Lost Songs of a Rhineland Harper". Mr. Bagby recently married Croatian chant scholar Katarina Livljanic.