Counting the Beat: 2/4, 3/4, and 4/4 Time

Tap your hand on your knee to a steady pulse — 1, 2, 1, 2. Now try tapping 1, 2, 3, 1, 2, 3. Did you notice something? The pattern of beats changed! Music is organised into groups of beats. Those groups are called bars. Today you will find out how musicians know how many beats go in each bar — and the secret is a simple pair of numbers called a time signature.

At the start of a piece of music, you will see two numbers stacked on top of each other — like a fraction but without the line between them. This is called the time signature. It tells musicians two important things. The TOP number tells you how many beats are in each bar. A bar is one small group of beats that repeats all the way through a piece of music. The BOTTOM number tells you what kind of note gets one beat. When the bottom number is 4, the beat is a quarter note (also called a crotchet). Most music you will meet uses a 4 on the bottom. Now let's look at the three most common time signatures: 2/4 TIME — Two beats in every bar. Count: 1–2, 1–2. This gives music a strong, marching feel. A military march often uses 2/4. 3/4 TIME — Three beats in every bar. Count: 1–2–3, 1–2–3. Beat 1 is the strongest. This is the time signature of a waltz — a smooth, spinning dance. Think of a merry-go-round spinning round and round. 4/4 TIME — Four beats in every bar. Count: 1–2–3–4, 1–2–3–4. This is the most common time signature in pop, rock, and folk music. It is so common that it is sometimes shown as a large letter C, which stands for 'common time'.