Woodwind Ensemble,Woodwind Quartet Flute - Digital Download SKU: A0.949184 Composed by Anonymous, John Dunstable. Arranged by Ian D. Crew. Christmas,Classical,Concert,Sacred,Standards. 36 pages. Grumpy Mule Music #6591405. Published by Grumpy Mule Music (A0.949184). The polyphony of the Medieval period is like nothing else. By turns raw, intricate, beautiful and bracing, the motets, masses, hymns and carols of the era never cease to astound. Re-imagined for Flute Quartet, here are four vocal works from the English and French traditions associated with Christmas.