Compound time signatures
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In compound meter, subdivisions of the main beat (the upper number) split into three, not two, equal parts, so that a Invalid Link Removed (half again longer than a regular note) becomes the beat unit. Compound time signatures are named as if they were simple time signatures, in which the one-third part of the beat unit is the beat, so the top number is commonly 6, 9 or 12 (multiples of 3). The lower number is most commonly an 8 (an eighth-note): as in 9
8 or 12
8.
An example
3
4 is a simple signature that represents three quarter notes. It has a basic feel of (Bold denotes a stressed beat):
one two three (as in a waltz)
Each quarter note might comprise two eighth-notes (quavers) giving a total of six such notes, but it still retains that three-in-a-bar feel:
one and two and three and
6
8: Theoretically, this can be thought of as the same as the six-quaver form of 3
4 above with the only difference being that the eighth note is selected as the one-beat unit. But whereas the six quavers in 3
4 had been in three groups of two, 6
8 is practically understood to mean that they are in two groups of three, with a two-in-a-bar feel (Bold denotes a stressed beat):
one and a, two and a
or
one two three, four five six