What are nested Tuplets?
Nested tuplets are rhythmic groupings in which a tuplet (such as a triplet or quintuplet) is contained inside an existing tuplet - for example you might have a triplet rhythm with one element of the triplet also being subdivided into a triplet.
What is a tuplet music?
In music, a tuplet (also irrational rhythm or groupings, artificial division or groupings, abnormal divisions, irregular rhythm, gruppetto, extra-metric groupings, or, rarely, contrametric rhythm) is "any rhythm that involves dividing the beat into a different number of equal subdivisions from that usually permitted by ...