Fractional time signatures are time signatures containing in the top number a partial beat-such as ¼, ½, or ⅓. They come in handy for modulating, phasing, and ”flipping” the beat.

 

An example of a fractional time signature:

When counting a fractional time signature, the easiest and most accurate way is to think of it as a simplified version of an additive meter or a pattern of beats that subdivide into smaller irregular groupings.