Music Theory · Chapter 2, Lesson 6 — Rhythm & Meter

Time Signatures

Two stacked numbers at the start of a piece that tell you exactly how to count every measure that follows.

Beginner ⏱ 4 min read 🥁 Interactive metronome

Top number: beats per measure

The top number of a time signature tells you how many beats fit in each measure. In 3/4, that's 3 beats per measure. In 4/4, it's 4.

Bottom number: which note is the beat

The bottom number tells you which note value counts as one beat. A 4 means the quarter note is the beat. An 8 means the eighth note is the beat. So 4/4 reads as "4 quarter-note beats per measure," and 6/8 reads as "6 eighth-note beats per measure."

🥁 Time Signature Metronome Pick a time signature and listen for the strong downbeat on 1.
💡 Listen for beat 1: in every time signature the metronome clicks louder and higher on beat 1 — that accent is what your ear uses to find the start of each measure.

Common questions

What does the top number of a time signature mean?

How many beats are in each measure.

What does the bottom number of a time signature mean?

Which note value counts as one beat — 4 for quarter note, 8 for eighth note.

What is the most common time signature?

4/4, or common time — 4 quarter-note beats per measure, used in most pop, rock, and folk music.

Can a time signature change in the middle of a song?

Yes — a new one can appear at any measure and applies until it changes again.

Lock into any time signature

Melody Monkey's backing tracks run in any meter you need — free to try.

Open the metronome →

Still stuck? Ask Your Personal Music Teacher about Time Signatures →

Keep learning