Circular Rhythm

[Edit 28/04/16 – fixed the notation of the voice-leading exercise]

A few months ago I was jamming with a trio I’m in (featuring Dylan Lynch and Max Zaska) and I improvised a riff I really liked.
Riff

It felt really inviting to play over, and Dylan coined the term “circular rhythm” for how we were freely choosing different points to accent within the cycle, not at all constrained by the barlines. I knew vaguely that this was an African-inspired approach to rhythm, and that it felt really good.

Today I’ll investigate what gives any riff or vamp this inviting, cyclical grooviness. Then I’ll look at techniques for getting very rhythmically free on the riff while still “inhabiting” it. This metaphor of the improvising musician being inside a rhythmic of harmonic form comes from Anthony Braxton’s phrase “navigating the form”.

The first nice thing about the groove is that it is compatible with two distinct divisions of the beat: 8ths (2 possible note placements per beat) or 16ths (4 possible placements).

8ths 16ths.png
2 possible underlying subdivisions

To me, these have a very different feeling, with the 8ths being smoother, more elegant, perhaps more amenable to laying back and legato playing. When soloing, I could switch between the two feelings to change the mood. Here though I just demonstrate the two one after the other.

The next nice thing I discovered is that the groove is clearly divided in groups of 3 (mostly) – a feature shared with most of the drum chants in 7 I posted about a few weeks back.

Groups 3

To come to grips with this perspective, I made a drum chant outlining the groups.

Drum Chant

…and improvised slight variations on the riff while singing it. You can see by how I’m weaving my body around that I’m feeling the rolling, triplet-ish physicality of those groups of threes! Like with those 7/4 drum chants, it was really nice to feel rhythmic independence (as drummers would call it) between my voice and hands.

A really strong technique that works nicely with this riff is rhythmic voice-leading, which I discussed already in my post on Charlie Parker’s melodies. In this video I play a bunch of different groupings that voice-lead to (i.e. land/resolve on) accents in the original riff.

Voice Leading Fixed 28 04 16
What I played in the video – groupings targeting notes of the riff

While recording that I was finding it hard to resist using two  other techniques. The first is using triplets over a 16ths groove which I do in the video below at 0:15 and 0:38. I like this because it brings out the resemblance between broken 16th rhythms and triplet rhythms – in fact, it’s really nice to “warp” between the two, playing rhythms that are in-between 16ths and triplets (0:24, 0:32). This happens a lot in both Afro-Cuban and Brazilian music.

 

The other technique is to just displace the notes of the riff like I do at 0:09 or 0:19. The distinctive Ab G notes at the start of the riff are great for this because they are so recogniseable even in different placements. This reminds me of something I heard Vijay Iyer say about being able to displace the downbeats of complex rhythmic forms – not letting the material master you. (Though obviously this is a bigger challenge in music as complicated as his!)

Finally, here’s a fun exercise that was my original idea for this post. To really face the 3 energy inherent in the riff, I tap every 3/8 – a “dotted quarter note” pulse – while nonetheless feeling the music in 4/4.

That’s all for today. Think I’m gonna post on Saturdays from now on, I never seem to make Friday. At some stage soon I want to talk about the political and cultural questions around being a white European studying music derived from and associated with African American communities. Also I want to interview some of the black musicians active in Dublin. But next week will probably be about lyrics.

Leave comments, on Facebook or even better here. Cheers!

Fun In Seven

A bunch of nice drum chants in 7/4 popped into my head while I was hiking around Powerscourt Waterfall last week. So today I’ll show various applications for them, and talk about a basic force in syncopation: maximally even rhythms.

Here I’m singing one of my drum chants while improvising over “Like Someone In Love” (one repetition of the chant per bar of the original song). The chant uses the grouping 2 3 3 3 3.

Drum Chants In 7 - 2 3 3 3 3

What’s fun about this is that it really exposed weaknesses in my rhythmic conception. I noticed I was playing notes without knowing exactly where they were placed. Normally I would rely on my foot tapping to get back in time. But now that I was busy singing the drum chant, these vague notes made the whole thing collapse. To avoid this, I had to clearly imagine phrases before they were played, and also rely much more on my muscle memory to let my fingers solve the problems. Both of these techniques required a lot of relaxation and focus. I’ll be trying this again for sure.

Here I took the shape of the drum chant – its rhythm and use of a high and low tone – and turned it into a bassline consisting of two moving guide tones through the A sections of “What Is This Thing Called Love”. The grouping this time is 3 2 2.

Drum Chants In 7 - 3 2 2
In the B section of “What Is This Thing Called Love” I use a grouping of 3 2 2 2 3 2 (or 5 4 5) as a variation. I made that into a chant of its own.

Drum Chants In 7 - 5 4 5 2

Then I turned that into a bassline and used it for some slow metronome practice, in different placements.

Finally, I took the distinctive “short short short long” part of the previous rhythm…

Drum Chants In 7 - S S S L

… and arranged it three times across two bars of 7.

Drum Chants In 7 - Long

The long notes (the Ls) now mark out a large-scale grouping of 9 10 9. There’s an important similarity between the last few drum chants: they all split 7 beats into three “maximally even” parts.
With 7 beats, the maximally even grouping is 3 2 2 (or a mode of that such as 2 3 2).
With 14 beats (or 7 beats divided into 8th notes), the maximally even grouping is 5 4 5 (or a mode).
With 28 beats (or 7 beats divided into 16th notes, or 14 beats divided into 8th notes), the maximally even division is 9 10 9 (or a mode).

Maximally even divisions are crucial in syncopation: 12/8 clave, for instance, is a maximally even division of 12 notes into 5 parts (2 3 2 2 3). For that matter, the major scale itself is a maximally even division of 12 chromatic notes into 7 parts (2 2 1 2 2 2 1). The principle is that the “odd ones out”, e.g. the 1s in the major scale, should be spread as far as possible away from each other. So a 2 2 1 1 2 2 2 scale wouldn’t be maximally even because the 1s are beside each other. For an example of a maximally even rhythmic division in 4/4 swing, check out the vamps in my band’s version of I Remember You. Stream it here.

To develop my 9 10 9 drum chant, I smoothly subdivided the 9s and 10s to make a cymbal pattern (3 3 3) (3 4 3) (3 3 3).

Drum Chants In 7 - CYmbal

As you can hear, it sounds very much like a simple triplet pattern, with a barely noticeable skip:

Then I wanted to add a cowbell but realised it would need a three-armed drummer. So I turned the rhythm of the original chant into a blues scale bassline (much like the one I used for the metronome practice above), with drums playing a “long seven” kick pulse and the cymbal and bell parts.

Drum Chants In 7 - Re-Orchestrated

Here’s a video of me smiling smugly as I play all the parts:

Hope you enjoyed that. Let me know if you’ve any thoughts or if anything should’ve been presented differently. And merry Christmas to those of you celebrating it!