Time signatures explained without the math

A time signature looks like a fraction and is taught like one. It is not. It is two separate instructions stacked up.

A time signature looks like a fraction and is taught like one, which is why so many people find it confusing. It is not a fraction. It is two separate instructions stacked on top of each other.

This is step two of the music theory path. Step one, reading the staff, is worth doing first if you have not.

The top number: how many

The top number tells you how many beats are in a bar. If it says 4, you count to four and start again. If it says 3, you count to three. That is genuinely all it does.

This is the number you can hear. Put on almost any pop or rock song and count along — one, two, three, four, one, two, three, four. You will find the pattern within a few seconds without knowing anything about notation.

The bottom number: what kind

The bottom number tells you which kind of note gets one beat. A 4 means a quarter note. An 8 means an eighth note. A 2 means a half note.

This is the part that trips people up, because it feels like it should change the speed. It does not. Tempo controls speed. The bottom number only decides which note value you are calling a beat.

Why 6/8 feels different from 3/4

Both have six eighth notes in a bar. On paper they look almost interchangeable. In practice they feel nothing alike, because of where the emphasis falls.

In 3/4 you feel three strong beats: ONE two three, ONE two three. Think of a waltz. In 6/8 you feel two groups of three: ONE two three FOUR five six. Think of a jig, or a slow blues shuffle.

Same notes on the page, completely different music, and the only thing telling you which is which is the time signature.

The practical takeaway

When you see a new time signature, ask two questions in order. How high do I count? And what am I counting? Everything else follows from those two answers.

Count out loud while you play. It feels ridiculous and it works better than anything else.