Here’s an exercise that’s been part of my practice regime for the last year or so. I came up with this after misreading a singles exercise in The Drummer’s Complete Vocabulary. You play exercise 1, on page 5 of G.L. Stone‘s Stick Control followed by 2 bars of 16th note hand-to-hand singles. Now repeat the process starting with exercise 2. Play the whole of page 1 start to finish this way. Start at around 180bpm and gradually build the speed up to 230bpm or higher. I’ve also added a Tumbao pattern for the feet.