Types of bar lines in music

Segment of time corresponding to a specific number of beats

For other uses, see Bar (disambiguation).

In musical notation, a bar (or measure) is a segment of music bounded by vertical lines, known as bar lines (or barlines), usually indicating one or more recurring beats.

The length of the bar, measured by the number of note values it contains, is normally indicated by the time signature.

Types of bar lines

Regular bar lines consist of a thin vertical line extending from the top line to the bottom line of the staff, sometimes also extending between staves in the case of a grand staff or a family of instruments in an orchestral score.

What is a bar in music

A double bar line (or double bar) consists of two single bar lines drawn close together, separating two sections within a piece, or a bar line followed by a thicker bar line, indicating the end of a piece or movement.

Note that double bar refers not to a type of bar (i.e., measure), but to a type of bar line. Typically, a double bar is used when followed by a new key signature, whether or not it marks

how long is 1 bar in music

how long is a bar in a song