THE BEST SIDE OF PEACEFULL MUSIC

four time signature, is in fact a holdover of the symbol, not a letter C as an abbreviation for "prevalent time", as popularly thought). While lots of of those improvements are ascribed to Vitry, and fairly existing from the Ars Nova treatise, it was a present-day—and personal acquaintance—of de Vitry, named Johannes de Muris (or Jehan des Mars