Time signatures: how to read and count 4/4, 3/4 and 2/4

The pulse of a piece of music is rarely a row of identical beats. The beats almost always fall into groups, with one stronger beat followed by lighter ones: ONE-two-three-four, ONE-two-three. These groups are called bars (or measures), and the time signature is the sign at the start of the score that tells you how they are built.

What a bar is

On the score, bars are separated by vertical lines called bar lines. Every bar holds the same number of beats, and the first beat of each, right after the bar line, is the strongest. That is why, in the lessons, the count always starts again at “1” when you cross a bar line.

Splitting music into bars is a huge help for reading: instead of following a long string of symbols, you read small blocks and always know where you are. If you get lost, just find the next beat 1.

The two numbers of the time signature

A time signature has two numbers stacked on top of each other, a bit like a fraction (but without the line):

• The top number tells you how many beats are in each bar. In 4/4 there are 4, in 3/4 there are 3, in 2/4 there are 2.
• The bottom number tells you which note gets one beat. The 4 stands for the quarter note. So in all three time signatures of Beginner 1, the quarter note gets 1 beat, the half note 2 and the whole note 4.

In later levels you will meet other bottom numbers, such as 8 (the eighth note gets one beat) and 2 (the half note gets one beat). The logic is always the same.

4/4: the most common time

Four beats per bar, counted “1, 2, 3, 4”. Beat 1 is the strongest, 3 is a secondary accent and 2 and 4 are lighter. It is the time signature of most pop and rock, and it is sometimes written with the letter C instead of numbers, called “common time”.

In 4/4, one whole note fills the whole bar, and so do two half notes or four quarter notes. Lessons 1 to 30 are all in 4/4, so you learn the notes and rests before the size of the bar changes.

3/4: waltz time

Three beats per bar, counted “1, 2, 3”, with a strong 1 and two light beats. It is the swing of the waltz and of many well-known songs, such as “Happy Birthday”. A whole note doesn't fit in 3/4, and the half note takes only two of the three beats, always paired with a quarter note or a quarter rest.

The most common mistake for people coming from 4/4 is adding a fourth beat without noticing, especially at the end of a bar with a half note. 3/4 is introduced in lesson 34.

2/4: march time

Two beats per bar, counted “1, 2”: strong, weak, like the steps of a march. Here the half note fills the whole bar. Since beat 1 comes back every two beats, the score is full of bar lines and reading has to move fast. 2/4 is introduced in lesson 31.

The three time signatures at a glance

How to count when the time signature changes

Notes keep their value when the time signature changes: the quarter note still gets 1 beat in 2/4, 3/4 and 4/4. What changes is where the count starts again. A few tips for the switch:

• Count out loud in the first exercises of a new time signature. Saying “1” in the right place keeps you from adding or losing beats.
• Give beat 1 a little more weight. A slightly stronger clap at the start of the bar helps you feel the grouping.
• Look at the time signature before you start. It sounds obvious, but after many lessons in 4/4 it is easy to start a 3/4 lesson counting to 4.

What about a whole bar of silence?

In 4/4, a whole bar of silence is written with a whole rest. In many scores the same rest also marks a whole bar of silence in any time signature, including 3/4 and 2/4. In this course, so that the beat count is always visible, a whole bar of silence in 2/4 is written as a half rest (2 beats), as lesson 33 explains. Learn more in the guide on rests.

To practice, block D (lessons 31 to 40) is devoted to 2/4 and 3/4, and block E mixes all three time signatures in longer readings. You can hear examples of each time signature on the Notes and rests page.