Quintuplets
A quintuplet (or a five-tuplet) is a tuplet consisting of five notes of equal length, typically used against 4 beats as a 5:4 polyrhythm. It’s regarded as the second building block when learning polyrhythms right after 3:2.
It’s also the basis of quintuplet swing, where the main grid is subdivided into quintuplets and the swing percentage becomes 60%. The most notable example of this swing pattern is Sequence Start by Sungazer.
There are a lot of microrhythmic possibilities regarding quintuplets, as displayed by a jt25k Fizz remix, where the second quintuplet in the 5:2 is slightly late.