Music Theory from ZeroMusic Theory
Chapter 3About 2 minAll chapters

Note length and rhythm

The same pitch, at different lengths and densities, becomes a different piece of music. Note values and the beat, checked by ear.

Length before pitch. Rhythm is the thing beginners put off longest, and it is the thing that changes the character of a piece most.

When choosing notes, most people start from "which pitch". But the first thing a listener registers is usually the rhythm. So let's change nothing about pitch and compare lengths only.

Note length is really "how many pieces"

Music runs on a steady pulse underneath — the interval you would clap along to. That is the beat, and note lengths are counted in beats. Everything here is in 4/4. The four rows below all last exactly as long as each other; only the number of notes differs.

  • Whole note — four beats (one bar in 4/4)
  • Half note — two beats
  • Quarter note — one beat (the clapping pulse)
  • Eighth note — half a beat
Top to bottom: the same span of time cut into one, two, four and eight. Every row is the same total length. Change the time signature and a different note fills the bar.Buttons and keys in the diagrams play sound. Check your volume first.
In plain wordsBeat

The steady pulse running under the music — what you tap your foot to. BPM says how many of those pulses happen in a minute.

Note count sets the mood

Over identical chords, changing how many notes you play changes everything. The two melodies below sit on the same C, G, Am, F. They draw from almost the same pitches; what differs is how many notes there are and how finely they are cut.

  • Few notes — reads as calm

    C | G | Am | F

  • Many notes — reads as forward motion

    C | G | Am | F

One progression, two note densities. The diagram is the shape of the melody — higher up means higher pitch.Buttons and keys in the diagrams play sound. Check your volume first.

The sparse one is easier to sing and leaves room for words. The busy one has energy but is hard to fit lyrics into. Neither is correct: verses usually stay sparse and choruses get busier, inside the same song.

Try it yourself. Push the note-density slider in the detailed settings to each end and you get the difference you just heard.

Generate with a different note density
The one thing to remember

Rhythm shapes the impression as much as pitch does. Fewer notes read as calm; more notes read as drive.

Quick review

Everything here is answerable from this chapter. Pick an option and the answer appears straight away.

  1. Question 1

    In 4/4, how long is a quarter note?

  2. Question 2

    To make a verse feel calm, what do you do with the note count?