Burgundian School
John Dunstaple (or Dunstable, – 24 December 1453) was an English composer who was the leading composer of 15th century England and among the most influential composers of his time. He developed the "contenance angloise" style ("English manner"), which pioneered the prominent use of harmonies with thirds and sixths. Crucial in the developing style of the Burgundian School, Dunstaple's music spans the transition from the medieval to the Renaissance periods.