Music Term
What is a time signature?
Definition
A time signature is a notational symbol indicating how many beats are in each bar of music and what type of note gets one beat, written as a fraction (e.g., 4/4, 3/4, 6/8).
Time signature in music -- explained
The top number of a time signature tells you how many beats per bar; the bottom number tells you what note value equals one beat (4 = quarter note, 8 = eighth note). The most common time signature in Western popular music is 4/4 (four quarter-note beats per bar) -- so ubiquitous it's called common time. 3/4 is waltz time, with a lilting ONE-two-three feel. 6/8 subdivides into two groups of three eighth notes, creating a compound feel often heard in ballads and folk music. Unusual time signatures include 5/4 (Take Five by Dave Brubeck, Seven Days by Sting), 7/8 (Money by Pink Floyd), and complex polymeter in progressive rock and math rock. Hip-hop and electronic music almost universally use 4/4 but add rhythmic complexity through syncopation and sub-division rather than time signature variation. Changing time signatures within a piece (metric modulation) is a hallmark of progressive rock, jazz fusion, and math rock.
Notable examples of a time signature
Take Five -- Dave Brubeck Quartet
The most famous 5/4 composition in jazz -- the odd meter swings naturally, almost escaping its own asymmetry.
Money -- Pink Floyd
The bass riff and verse occupy 7/4 time, shifting to 4/4 for the guitar solo -- a deliberate structural contrast.
Everything in Its Right Place -- Radiohead
Alternates between 5/4 and 4/4 in a way that feels unsettled without being academic.
Related music terms
Frequently asked questions
- What is a time signature in music?
- A time signature is a notational symbol indicating how many beats are in each bar of music and what type of note gets one beat, written as a fraction (e.g., 4/4, 3/4, 6/8).
- What is an example of a time signature?
- A well-known example is Take Five by Dave Brubeck Quartet: The most famous 5/4 composition in jazz -- the odd meter swings naturally, almost escaping its own asymmetry.
- How is a time signature used in music?
- The top number of a time signature tells you how many beats per bar; the bottom number tells you what note value equals one beat (4 = quarter note, 8 = eighth note). The most common time signature in Western popular music is 4/4 (four quarter-note beats per bar) -- so ubiquitous it's called common time.
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