Bartók Béla Viktor János ： Mikrokosmos Vol.5 No.135 Perpetuum Mobile BB 105 Sz 107

Bartók’s No. 135, “Perpetuum Mobile,” from Volume 5 of Mikrokosmos is an educational work designed to develop a feeling of uninterrupted forward motion. Its succession of short note values should remain clear and even, while changes in note placement and accents give the flow expressive variety. A key listening point is the sustained sense of propulsion and tension without becoming merely mechanical. It is helpful to organize the fingering and rhythms in small units and practice with a light touch, avoiding unnecessary tension. Rather than rushing the tempo, first stabilize the beat, then bring out the direction of the phrases and balance of the sonority to highlight the vivid flow characteristic of a perpetual-motion piece.