The meter of a song is indicated by its time signature. The time signature consists of two numbers, stacked one on top of the other. The top number represents the number of beats per measure, while the bottom number represents the note value for each beat.
How can you tell the time signature?
A time signature tells you how the music is to be counted. The time signature is written at the beginning of the staff after the clef and key signature. Time signatures consist of two numbers written like a fraction. The top number of the time signature tells you how many beats to count.
What is the time signature of rhythm?
You'll spot the time signature in the beginning of the music – it's two numbers stacked vertically. The top number tells you how many beats there are in one measure. The bottom number tells you what kind of note is considered one beat.