Here we work on independence, one of the most interesting aspects of the drum kit. These exercises were influenced by those created by the drummer Kenny Arnoff. Watch out that the cymbal maintains one figure, the snare is in the 2-4, the hi-hat with crotchets and we read with the bass drum. Figures of one, two, and three beats. These exercises have helped me a lot to work on ambidexterity and all students of mine who have used them have been surprised with the results. Speed (crotchets) = 60 and (crotchets) = 70. As I have commented in all the exercises, the difficulty lies in being able to synchronise all of the elements (snare, bass drum, hi-hat, cymbal). Here you are working with the second and fourth semiquaver. Observe the pulsation of the rest, the snare at 2-4 or the hi-hat with crotchets; they can help you maintain the beat.