Revisiting The Elements of Rhythm, Vols. I & II

On November 24th, 2012, I launched this blog about my books, The Elements of Rhythm, Vols. I & II (Rollinson Publishing Co.). It’d taken me thirty years to create the books in a format that I was truly satisfied with, and for the next three years, I had the time and energy to promote them to a fair degree.

But in all honesty, working full time in Los Angeles was simply too much, and I ran out of steam for getting the word out about what arguably was and remains one of the most systematic methods for studying rhythm patterns and their origins. I live in my hometown now (Austin, Texas), where the pace is a little more conducive to peace and sanity…

It’s my hope that if you’ve found your way to this blog, you’ll visit the dedicated website ( as well as read the other eleven posts I put up here a few years ago.  There are a finite number of building block rhythm patterns that all of the larger, more complex patterns originate from. My books contain the complete list and also offer an organizing system for categorizing them.

If you’re a serious student of rhythm, you’ve come to the right place. I appreciate you visiting the blog site, and I’ll be updating it much more regularly with comments, exercises and applications of the books’ contents. With everything that’s going on in the world today (Covid-19), we have a lot of time at home to study everything we never had time to explore. I hope this blog, the website and the books help you in your journey to better understand the subtleties and complexities of rhythm pattern evolution, and I hope you’ll check back often to see where we’re going with new ideas about this fascinating and dynamic subject.

With much appreciation, David R. Aldridge

Binary Rhythm Indexing System from The Elements of Rhythm, Vol. I

One of the key and unique components to The Elements of Rhythm series and its introduction of binary rhythm pattern theory is the way in which we classify and catalog the fundamental building block rhythm patterns. I recall showing the book draft to Peter Erskine several years ago, and one of the most important questions he could have asked me was, “What are you going to do with all of those 0/1 combination tables?” I told him I didn’t quite know yet but that I was sure there was an application that either myself or someone else would come up with.

Shortly after that conversation, I discovered some work by mathematician/musician Vi Hart, where she gave a presentation regarding a simple way to identify basic rhythm patterns using 0s and 1s. It seemed we were on a similar path, so I contacted her and asked how far she’d worked out her system. Vi replied that she had only down a little work, so I expanded on her idea and came up with the Binary Rhythm Pattern Indexing System.

The idea is that we can classify and catalog each of the fundamental building block rhythm patterns by their event point level grouping and the sequence in which they logically and naturally occur.

The Binary Rhythm Pattern Indexing System is important for several reasons. First and foremost, it doesn’t exist anywhere in music theory or rhythm research, at least not as far as I was able to find at the time I published The Elements of Rhythm in 2012. Secondly, it can be used by anyone who is interested in systematically researching rhythm patterns and wanting to somehow identify their fundamental essence.

It’s a system that’s in its infancy, waiting to be explored as a tool and modified as needed. For now, it can give you a basic idea of how to catalog and classify the basic patterns for up to eight event point levels (beat note groupings or beat note divisions). I hope it can prove to be of use in your work, and please feel free to submit comments on its use, application and improvement. My special thanks to Vi Hart for the inspiration to find meaning in the numbers. She’s amazing in that way, and I invite you to explore her own works further, at

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(excerpts reprinted with permission from The Elements of Rhythm, Vol. I, Rollinson Publishing Co., 2012)