Étude du Rythme is an educational tool proposed by Georges Dandelot (1895-1975), a French composer, agreeing with the concept that rhythm is the foundation on which melody and harmony are then layered. It was conceived to progressively teach musicians how to deal with complicated rhythms such as those used by Bartok or Ravel. This is the fifth and last volume of a step-by-step method to learn and master rhythm in music. It follows on the knowledge acquired in the four first volumes, highlighting the “mixed measures” and using complex combinations of rhythms and melody with binary and tertiary tempos.