This is a very short excerpt from the fourth DrumMantra book, Groove Studies with the 20th Note.
The fourth book in the DrumMantra repertoire is full of coordination exercises focused on the groove.
Everything in this book is based on the 20th note subdivision. Unlike the Foundational Series & Primary Series books, this book stays in one-time signature - 4/4. When fully mastered, each exercise will bring you to a deeper level of comfort with playing grooves based on 20 subdivisions per bar.
This new paradigm in subdivisions will take some time to sink in. Have patience.
Each section also has a warm-up/time-checking exercise that utilizes the linear field concept where the hands fill in all the 20th notes linearly, with the left hand also covering the backbeats on 2&4.
There are two polymetric sections in this book. Section IV is a four-note grouping on the hi-hat, making it a 4:5 polymetric relationship. You may notice that when you are playing these particular exercises, the ear wants to take advantage of rhythmic perception and start to hear things in 5/4 with sixteenth notes rather than in 4/4 with twentieth notes.
