What is this music? Fundamentally, it's an exploration of what happens when an improvisatory instrumental voice (saxophone) is placed into the world of early vocal music--which has elements of both improvisation and formal structure. In reality, it's an adventure in which the four male voices of the Hilliard Ensemble travel the 14th- and 15th-century territory of Morales and Dufay, visit the 12th century of Perotin, and roam even earlier ages of plainchant, accompanied by the always sensitive and tasteful--and often astonishing--saxophone improvisations of jazz master Jan Garbarek. Sometimes, these new melodies simply accompany; sometimes they transform the common--a routine minor chord, for instance--into a sublime, indescribable moment. The answer to the above question is easy--but it's different for each listener. --David Vernier

• Officium Novum
• B00000K2AC
• B0002IVZ2W
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• Perotin