Hyperion has long been a champion of music from the Medieval era. Combining the highest levels of scholarship with brilliant musicianship and award-winning recordings, Hyperion has helped open the ears of a generation of listeners to the musical riches of the Middles Ages. On this intriguing release, John Potter, Christopher O'Gorman and Rogers Covey-Crump offer a selection of music from the Ars antiqua period. Focusing on a genre of sacred vocal works called the Conductus, the singers explore Western music's first experiments in polyphony. Extensive booklet notes by musicologist Mark Everist probe into the intricacies of performance practice as well as analyzing the music and poetry in context.