The Conductus project aims to find a greater understanding of 12th and13th century music and poetry, and involves musicologists and scholars led by Mark Everist at the University of Southampton. There will be a monograph for Cambridge University Press in due course, and each of the three CDs on Hyperion will present the results of experimental sessions shedding new light on ancient performance practice. Tenors John Potter and Christopher O'Gorman perform this concert version - a unique opportunity to hear the results of the latest research into this intriguing period of early polyphony. They are accompanied by a specially created film by Michael Lynch.