The front plate of your box cajon is designed to have a certain amount of flex or “give” to not only obtain a rich deep tone, but also to be easy on the hands. Because of this you can actually bend it with slight pressure from your heel as you are playing to change the pitch.
1. Start at the bottom with your heel pressing lightly against the front plate.
2. Play agroove with your hands, and gently ride your heel up the cajon toward the center.
3. You do not need to press hard at all, but you’ll notice a “tom-tom”-type effect. With your hands capable of playing bass and snare frequencies, and the heel of your foot controlling tom-like tones, the cajon is truly a drum set in a box!