Two Beats Against Three: A Rhythm Puzzle
Here is a rhythm puzzle that you can try at a table. It is called two against three, and it can feel a little like rubbing your tummy while patting your head. Musicians call it a polyrhythm, which means that several different rhythms are sounding at the same time.
Begin by imagining a line of six equal steps, and count them out loud: 1, 2, 3, 4, 5, 6. First, tap your left hand on steps 1, 3, and 5, which gives you three evenly spaced taps, and practice until that feels steady. Then, with your right hand, tap on steps 1 and 4, which gives you two evenly spaced taps.
Now put the two patterns together. On step 1, both hands tap at once. On step 2, nobody taps. On step 3, only the left hand taps, and on step 4, only the right hand taps. On step 5, the left hand taps again, and step 6 is silent before everything starts over at step 1.
Go slowly at first and keep saying the numbers out loud, because your brain naturally wants to make both hands do the same thing. After a few tries, the pattern suddenly clicks into place. Drummers in many parts of the world play layers like this together, and the combination creates a pulse that seems to roll forward.