Meter provides an underlying gravitational force in music: a living, dynamic time/energy “grid” that, depending on how the other musical elements align with it, will produce a varied range of sensations, including (though not limited to) confidence, agitation, whimsy, or repose.
To understand the source of musical meter, we must trace it back to its physiological and psychological roots. Think of the regular rhythmic patterns of walking feet, chewing jaws, inhaling and exhaling, or a beating heart. Musical meter not only emulates human motion and locomotion, it captures its energy and gives it back as we listen.
In musical meter, these human artifacts translate into “stronger and weaker beats.” By “stronger” and “weaker,” we mean that certain beats naturally feel “more grounded,” or “heavier” than the other beats, which feel like they “bounce up and away from” or “pull down toward” the stronger beats.
Rather than counting beats in an uninterrupted series (1, 2, 3, 4, 5, … 17, 18, 19, … 215, 216), we “meter out” or “measure” these heavier and lighter beats into groups we call “measures,” almost always based on units of 2, 3, or 4.
Going further, the first of any measure feels the heaviest, like the “starting point” or “foundation” for the beats that follow. We refer to it as the “downbeat.” And we refer to the very last upbeat in any measure as the “upbeat,” because it feels especially light, even “edgy” in its need to “land.” In measures with more than two beats, any beats between the first and last possess varying degrees of upbeat or downbeat gravitational properties.
A melody gets much of its expressive power by the precise ways it aligns its gestures to begin and end on upbeats and downbeats.
- Glossary: unaccentedWe designate a note or chords as unaccented when they are played or sung before or after a beat. Why does this matter? Because the meter affects how notes and chords behave and feel, and even what they mean.
- Glossary: melodic idea
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