6/8 holds six eighth notes, but you feel two beats, each a dotted quarter. The click follows those two beats, so each click holds three eighths.
Quarter-eighth is the typical long-short 6/8 figure. It feels like a triplet in 4/4, because it is the same division of the beat.
| Figure | Count | Kodály syllables |
|---|---|---|
| Three eighths | 1 la li 2 la li | tri-o-la |
| Quarter + eighth | 1 (la) li | ta-ti |
| Dotted quarter | 1 (la li) | ta-i-i |
In simple time, such as 2/4 and 4/4, each beat divides into two. In compound time each beat divides into three. 6/8 is the most common compound meter: six eighth notes in a bar, grouped 3 + 3, which gives two beats that are each a dotted quarter long. That is why the eighth notes are beamed in threes.
Both bars hold six eighth notes, but they are grouped differently. 3/4 has three beats of two eighths: "1 & 2 & 3 &". 6/8 has two beats of three eighths: "1 la li 2 la li". Clap six even eighths and accent every second note, then every third note, and you will hear the difference at once.
6/8 has a swaying or skipping feel. It is the meter of jigs, of barcarolles (boat songs) and of marches such as Sousa's "The Washington Post". At slow tempos conductors sometimes beat all six eighths, but the two big beats are still felt underneath.