6/8 and 12/8 Time

By the end of this lesson, you will read six written eighth notes in 6/8 as two large beats and twelve eighth notes in 12/8 as four large beats. Each large beat is a dotted-quarter beat containing three eighth notes. The original examples help you hear the length of each cycle instead of merely counting symbols.

See six subdivisions, feel two large beats

In 6/8, the 6 tells you that a measure contains six written eighth-note units. In the common compound-meter feel, they group as 3+3. The performer feels two large beats: the first includes the opening three eighth notes and the second includes the next three. Each large beat lasts one dotted quarter note.

Count “1-la-li 2-la-li” while learning. Once the pattern is stable, feel two broad gestures instead of six separate pulses. The eighth note remains the written unit represented by the denominator, but it should not be confused with the felt beat used for performance. Calling 6/8 “six beats” may serve a special slow analysis, but it does not describe the two-beat feel developed here.

12/8 expands to four large beats

In 12/8, each measure has four groups of three eighth notes. Count “1-la-li 2-la-li 3-la-li 4-la-li.” Its cycle is longer than 6/8: instead of returning to the strongest beat after two large beats, you travel through four. Both are examples of compound meter because the felt beat divides naturally into three equal parts.

Compare them physically. Draw two arcs per measure for 6/8 and four arcs for 12/8. Do not accelerate when moving to 12/8. At the same eighth-note speed, the 12/8 measure in this comparison lasts twice as long as the 6/8 measure.

Exercise

Two contrasting patterns

The 6/8 pattern Two Oar Strokes has a short cycle with weight at the start of each group of three. Play it in the right hand from C4 to G4. The 12/8 pattern Four Steps Around carries a phrase across four anchors. Before playing, circle the first note of each three-note group; those are the large beat numbers.

Keep the three parts within a beat equal. The grouping is expressed by gentle weight on the first part, not by making arbitrary long-short values. When one dotted quarter replaces three eighth notes, press once and sustain through the entire “number-la-li” group.

Common mistakes

• Symptom: All six eighth notes feel equally heavy. Correction: Take two broad steps and speak three subdivisions inside each one.
• Symptom: A 12/8 measure ends after group 2. Correction: Raise one of four fingers for each large beat.
• Symptom: The three subdivisions are uneven. Correction: Tap six or twelve equal points before adding group weight.

Frequently asked questions

Is 6/8 the same as 3/4 because both can contain six eighth notes? No. 3/4 normally organizes three beats divided in two, while 6/8 organizes two beats divided in three.

Why is a dotted quarter called the large beat? Its duration equals three eighth notes, exactly one group in compound meter. It lets the body feel the larger motion.

Is 12/8 always slower than 6/8? No. Tempo determines speed. 12/8 has a four-beat cycle instead of two; each beat can be fast or slow.