Libor Hadrava is the author of In-depth Rhythm Studies, the owner and head instructor of Axiom Music School, and is a featured educator for DRUM! Magazine, Dream Cymbals, and Vater Percussion.

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“Using Libor’s book will give you more years to live life outside of the practice room.”

Mike Mangini


“In-Depth Rhythm Studies offers a refreshing end unique look into the sometimes subtle, sometimes complex world of ‘rhythm’ and ‘time’ and the undeniable relationship between them. Through clearly explained challenging exercises Libor’s book can, without a doubt, elevate every drummer’s command of these vital areas of drumming to new levels.”

Rod Morgenstein


“Developing our ability to hear and process the music in which we take part are two of the most important skills a musician can develop. All great musicians have attained these skills, and Libor’s book will help YOU attain them, too.”

Dave DiCenso


“A metronome con be a friend or foe… Libor Hadrava reveals in a magical, creative way it is our friend, and In-Depth Rhythm Studies reveals the secrets.”

—Jon Hazilla


“Very clear, concise, and challenging.”

—Skip Hadden




In-Depth Rhythm StudiesAdvanced Metronome Functions” is a methodical book that will take you on a journey and open a few hidden doors to understanding rhythm within time. Through diligent practice of the exercises in this book, you will learn several ways of approaching time keeping beyond the traditional methods, and you will increase the capacity of your brain to process data from multiple sources at the same time. Gaining this freedom will give new meaning to the “muscle memory” process and its relationship with mental activity. These are advanced exercises that will develop your mental ability to oversee and control what we physically do as drummers.


The methods in this book are nontraditional tools for developing “time awareness,” an awareness of the space between notes. This is a priceless asset for you as the person other musicians look to as THE TIMEKEEPER. The methods will take you in a stepwise fashion to develop a solid inner clock and give you the skill to recognize, acknowledge, and focus on rhythmic phrasings outside of your own. This will liberate you from fixating only on what you are playing and will teach you to be aware of what is going on around you in the complex, layered mix of melody, harmony, and rhythm we call music.


The vast majority of popular Western music functions atop a grid of time; a rhythmic key to which everything that is played relates mathematically. Even atypical rhythms that seem to clash with the main pulse must eventually resolve to the grid if they are to achieve their conventional purpose of &tension and release.& This invisible, binding force—the feel of music—is therefore THE MASTER CODE. If we are to improve our sense of time, everything we practice, everything we play must relate to The Master Code, and we must always know where we are in relation to it. More importantly, we need to convey to other musicians that we know where we are and outline a roadmap for them as well. While &keeping time& is arguably the responsibility of every musician, rest assured that if you play the most incredible over-the-barline fill and the guitar player can’t find &1& as a result, you’ve done a disservice to the music.


Beyond solidifying our connection to The Master Code, these Rhythm Studies will also help increase your aptitude for and comfort with sight reading. Further, because you will incorporate your voice in these methods, you will develop 5-way independence with 4-limbed coordination. But perhaps the main benefit of mastering this method is the cultivation of your individual creativity. Once such a high level of coordination is reached, you no longer need to devote as much of your mental capacity to it, thus allowing more of your concentration to be focused on personal expression. These studies will equip you with new potential in your continued musical development. I strongly believe that following my method will foster a better understanding of your instrument, its possibilities, and your role as drummer in the larger musical picture.

While your musical individualism is important, it is equally important to be able to learn parts quickly and accommodate other musicians and producers. The better you are able to do this, the more likely you are to succeed as a drummer in the modern music industry. By mastering the concepts of this book, you can find yourself in league with the most renowned of session and solo musicians.



Before setting off on this journey, be aware that I can only give you the keys to the tool shed and the operating instructions for the stuff inside. It’s up to you to get good at using it. Even once you’ve learned to operate these tools, you must take care to wield them responsibly and see that no harm comes to your collaborators or your audience! Finally, you must hone these skills until with them you can create art. So, yes, be it with a chainsaw or a drum set, hard work and perseverance are ultimately what will help you grow as an artist!

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