Duple Meter

Duple meter groups the beats in twos: STRONG-weak, STRONG-weak. It is the meter of walking and marching, left-right, left-right, and you hear it in marches, polkas, many folk dances and children's songs.

Simple and compound duple

There are two families of duple meter, depending on how each beat divides:

• Simple duple: each beat splits into two. 2/4 (two quarter-note beats) and 2/2, or cut time (two half-note beats), are the usual signatures.
• Compound duple: each beat splits into three. 6/8 (two dotted-quarter beats) is the usual signature, and 6/4 also appears.

Both have two beats per bar. What changes is the motion inside each beat: even pairs in simple duple, rocking groups of three in compound duple.

▶Simple duple (2/4)0:06▶Compound duple (6/8)0:07

Counting and conducting in two

Count "1, 2" on the beats, and "1 & 2 &" or "1 & a 2 & a" for their divisions. A conductor beats duple meter with a simple down-up pattern: down on 1, the downbeat, and up on 2, the upbeat.

Duple or quadruple?

By ear, duple and quadruple meters can be hard to tell apart, since a bar of 4/4 can sound like two bars of 2/4. Listen to how often the strongest accents and the chord changes come. If every other beat feels equally strong, the music is probably duple. If beat 1 clearly outweighs beat 3, it is probably quadruple. Often both readings work, and the composer's choice of time signature mainly affects how the music looks and how you count it.

Feel the difference between 2/4 and cut time in Two Beats in a Bar: 2/4 & Cut Time and Count in Two, and meet 6/8 in Time Signatures II: Compound Time.