John Dunstaple was one of the most celebrated composers of the medieval period. Tantalisingly little is known about him, and what little is known is tantalising. He served in the courts of the family of Henry V and two pieces here were performed in Canterbury Cathedral to celebrate Henry V's victory at Agincourt. The booklet includes illustrations from the only known surviving Dunstaple autograph manuscript, an astronomical treatise in Emmanuel College library. "A treasure trove of unfamiliar and little heard masterpieces, this imaginative record is a model of what can be achieved when scholars and performers genuinely collaborate"