Each line is 1 drum fill, consisting of 16 x 16th notes. What we are doing with this sheet is diving that total number of 16 into various number combinations for different drums. Whilst all music could be related to maths, this exercise is a blatant use of numbers to make up the drum fills. You may hear of styles like ‘Math Rock’, where sometimes all the instruments explore this technique of coming up with and exploring rhythms, time signatures and phrases from a mathmatical stance, in a deliberate and focused way.
For example, an easy drum fill around the kit would be 4 + 4 + 4 + 4 = 16. That’s the drum fill that most drummers are taught first. 4 snares, 4 high toms, 4 medium toms and 4 floor toms.
Play every exercise with a continuous Right Left Right Left sticking (this is the opposite if you are left handed).