You have met four beats in a bar and three beats in a bar. The last common grouping for now is two: 2/4, the time of marches and many folk dances. This lesson also completes your set of basic rests, adding the half rest and the whole rest, so you can count through longer silences without losing your place.
What 2/4 means
In 2/4 the top number is 2, so there are two beats in every bar. Each beat is still a quarter note. You count 1 2, 1 2, and it feels like marching: left, right, left, right. Beat 1 is strong; beat 2 is lighter.
Because the bars are short, bar lines come thick and fast in 2/4. A bar can hold two quarter notes, or one half note, or a half rest, and that is all.
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Comparing the three time signatures
The top number is your guide:
- 4/4: four beats per bar, counted 1 2 3 4. Steady and common, used for many songs.
- 3/4: three beats per bar, counted 1 2 3. The sway of a waltz.
- 2/4: two beats per bar, counted 1 2. The step of a march.
Always look at the time signature before you start, and count one bar aloud to set the speed before you play.
The half rest
A half rest is two beats of silence. It is a small filled rectangle that sits on top of a line, like a hat. On a rhythm line it rests on the single line; on the five-line staff you will meet in the next unit, it sits on top of the middle line.
In 2/4, a half rest fills the whole bar. Lift your hand, count "1, 2" silently, and come back in on the next 1.
The whole rest
A whole rest looks almost the same as a half rest, a small filled rectangle, but it hangs below the line instead of sitting on it. In 4/4 it lasts four beats, a whole bar of silence.
A handy way to remember which is which: the half rest looks like a hat sitting on the line, and the whole rest looks like a hole dug below it.
One extra detail: printed music often uses a whole rest to mean "rest for this whole bar" in any time signature, even 3/4 or 2/4. In the Academy's beginner pieces, a silent bar of 2/4 is written as a half rest, to keep the counting straightforward.
Little March
The piece for this lesson is Little March, in 2/4. Its first four bars go C C, E E, G E, and then a half rest: a whole bar of silence. The second half answers: G G, F F, E D, and a long C to finish.
The silent bar is the test. Keep marching in your head, "1, 2", and the G comes in exactly where it should.
How to practise
- March on the spot and count "1, 2" with each step. This makes 2/4 physical.
- Clap the 2/4 example with the half rests. On each rest, open your hands and count silently.
- Clap the 4/4 example, including the whole bar of silence. Count all four beats of the whole rest.
- Play both rhythms on middle C. Lift your hand fully off the key during each rest.
- In C position, play: C E, G E, C (held for two beats), then a bar of rest. Count "1 2" throughout.
- Play Little March, then go back to a piece in 4/4 and one in 3/4. Switching between the three keeps you alert to the time signature.
Common mistakes
- Cutting rests short. A silent bar feels long. Count it in full; don't jump in early.
- Letting notes ring through rests. Lift the key so the sound stops.
- Counting to four in 2/4. If the bars feel too long, check the time signature again.
- Treating 2/4 as rushed. Two beats a bar does not mean faster beats. The speed of each beat is set by the music, not by how many fit in a bar.
For a wider view of note and rest lengths together, see the guide to note lengths and rhythm.
Try it in Pianuvo
This lesson closes Unit 1: Pulse and rhythm through playing. You tap rhythms with half and whole rests, play a short march figure in 2/4, learn Little March and finish by playing Au clair de la lune at full speed. Use the on-screen keys, a MIDI keyboard or a real piano heard by your microphone: the Academy scores both your notes and your silences.