A Polyrhythm occurs when two even beats are played in the same time that three even beats are played.
These Rhythms have an individual "feel" about them, and can require considerable practice in order to "feel" them correctly. They are very common in tribal music, West Indian, African etc. as well as Western music. Concentrate on the "feel", to begin with, then study the notation, to see how Poly Rhythms can be formed from alternative rhythmical patterns.
These Rhythms are more popular in todays music because of the subtle manner in which they are usually played.
Before we actually play a polyrhythm, the exercise below will help you to achieve the feel:
By keeping the Bass Drum the same, and playing only the ACCENTED notes in Exercise 466, a Polyrhythm is formed in Exercise 467.
(2 even beats over 3 even beats).
Using the same formula, the exercise below will help you to form another Polyrhythm:
By keeping the Bass Drum the same, and playing only the accented notes in Exercise 468 a Polyrhythm is formed.
Again, Exercise 470 (below) will help you to form another polyrhythm, with 3 beats on top and 2 beats on bottom.
Keep the Bass Drum the same and play only the accented notes in Exercise 470 (above) and this Polyrhythm is formed:
Study the following exercises, and see how Polyrhythm can be formed from VARIATIONS in rhythms.
In Exercise 473 (below), the top rhythm is a VARIATION of eighth note triplets, so the Polyrhythm must be FELT.