A duplet will have 2 of the note value with a number 2 above or below to represent that it is a duplet. The most common duplet is the eighth note duplet, often found in 6/8 time. To count duplets we will use the simple meter counting method from Lesson 17, of using the syllable "AND" on the second half of the beat.
What does Duplets mean in music?
: two musical notes played in the time of three of the same value — compare triplet.