Time Signatures + Bar Lines
Time signatures are found after accidentals at the left of a line.

The most common time signature is 4-4 time.
The top number represents how many beats are in a bar/measure.
The bottom number represents what type of note is equal to one beat.

Bar Lines
What is a measure and bar line?

A bar line indicates the beginning and ending of a line and measure.
A measure separates the notes by however many beats per measure.
