Motoric rhythm

What it means

Motoric rhythm designates an evenly running movement in equal note values that proceeds like a machine: relentless, without stretching, without slackening. The term points to the motor as an image for a mechanical, constant driving force.

Characteristic are continuous eighths or sixteenths, an unchanging pulse, and an effect that arises from the persistence of the movement. Melody and harmony often recede behind the rhythm.

Motoric rhythm is to be distinguished from the perpetuum mobile, which likewise rests on continuously running movement but designates a genre of its own, usually a virtuoso piece for a solo instrument. Motoric rhythm, by contrast, is a stylistic feature that occurs in many genres.

In the notation

Motoric rhythm is recognizable by long sequences of equal note values without rests, often over many bars or whole movements. Performance markings such as ritmico, meccanico, or sempre uguale reinforce the character. Tempo changes are usually absent or abrupt rather than gradual.

Musical use

Continuously running movement exists in the music of every period, for instance in the Baroque, where many movements rest on even figures. As an explicit stylistic device, motoric rhythm becomes significant in the early twentieth century, when composers turn away from the free tempo of the Romantic era and depict the machine world of modernity musically. It also plays a role in later music that rests on repetition.

Motoric rhythm shaped the music of the early twentieth century, for instance in Stravinsky, Prokofiev, Bartók, and Hindemith, and connected to Baroque ostinato techniques. It works machine-like and relentless. The evenly running note values and repeated patterns create a strong pull, often associated with machines, sport, or the big city.

Performance practice

Keep the pulse relentlessly even and forgo any agogic freedom. Take care that all notes are equally long and equally distinct. Practise with a metronome, to prevent unnoticed speeding up or slackening. And shape through dynamics and articulation, since the tempo offers no latitude.