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In Western music, you mostly see polymeter over short time spans in the form of hemiola or syncopation. This is much more common in Western music than polyrhythm. The onsets in each loop have the same duration, but each loop has a different number of onsets.

Polymeter is two or more concurrent loops of different duration.

In Western music, polyrhythms usually only occur for short time spans in the form of tuplets, but in West African drumming, polyrhythms are a core structural feature. When people talk about 4:3 or 5:2 polyrhythm, this is what they mean. Finally, t he ratio of the number of onsets in each loop is not a whole number (otherwise one loop would just be an even subdivision of the other). T he loops contain different numbers of onsets, meaning that the subdivisions of each loop are not same length. Each loop consists of a set of evenly-spaced subdivisions or rhythmic onsets.

Polyrhythm is two or more concurrent loops of equal duration.

Tyler’s thesis contains the clearest definition of the terms that I know of, which I paraphrase here. The words “polyrhythm” and “polymeter” are frequently used interchangeably, but they are not the same thing. This means that you can use the Groove Pizzeria to make polyrhythm and polymeter. The Groove Pizzeria gives you two sets of concentric rhythm necklaces, each of which can have its own time duration and subdivisions. The Groove Pizza is a set of three concentric rhythm necklaces, each of which controls one drum sound, e.g. Like the Groove Pizza, the Groove Pizzeria is based on the idea of the rhythm necklace, a circular representation of musical rhythm. You can record the Groove Pizzeria’s output using Audio Hijack, however. As of this writing, there are no presets, no saving, no exporting of audio or MIDI, and no changing drum kits.

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Note that the Groove Pizzeria is still a prototype, and it doesn’t yet have the full feature set that the Groove Pizza does. If you use the aQWERTYon in your classroom, or for your own personal exploration (and we hope you do), please let us know! Posted on SeptemAuthor Ethan Hein Categories Ethan's Ideas Tags aqwertyon, Autobio, chords, harmony, interfaces, midi, musedlab, musedtech, Music, Music Teaching, Music Theory, New School, scales, Software, Technology, visualization Leave a comment on Announcing the Theory aQWERTYon The Groove Pizzeriaįor his NYU music technology masters thesis, Tyler Bisson created a web app called Groove Pizzeria, a polyrhythmic/polymetric extension of the Groove Pizza. We want to do for the web browser what Samuel Halligan’s pop-up piano does for Ableton Live Suite: turn it into a visual and aural Rosetta stone that translates in real time between different visual and aural representations of music. You can read about the design process here, and read about the pitch wheel specifically here.Įventually we would like the aQWERTYon to show other real-time information as well: notes on the staff, chord symbols, and the like. I have been drawing scales and chords on the chromatic circle by hand for a long time, and I wanted to be able to produce them automatically. This idea has been in the pipeline for a while, but the impetus to finally push it to completion was my Fundamentals of Western Music class at the New School. These geometric visualizations are meant to support and complement your aural understanding of intervals and chords, the way that they do with rhythms on the Groove Pizza.

If you play three or more notes at a time, they will form an orange shape. If you play two notes at a time, they will be connected by an orange line. Finally, orange notes are the ones that are currently being played. Grey notes are outside the selected scale. Purple notes are neither bright nor dark, i.e.

Green notes are “bright”–i.e., major, natural, sharp, or augmented. Blue notes are “dark”–i.e., minor, flat, or diminished. The color scheme on the pitch wheel is intended to give you some visual cues about how each scale is going to sound.

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In addition to playing the built-in instruments, you can also use the aQWERTYon as a MIDI controller for any DAW or notation program via the IAC bus (Windows users will need to install MidiOX.) Turn the aQWERTYon’s volume to zero if you’re doing this. It visualizes the notes you’re playing on the chromatic circle in real time. Click the image to try it! (Be sure to whitelist it on your ad blocker or it won’t work.) Yesterday, we launched a new version of the app, the Theory aQWERTYon. The aQWERTYon maps scales to the keyboard so that there are no “wrong notes,” and so that each column of keys plays a chord. The name is short for “QWERTY accordion,” because the idea is to make the computer keyboard as accessible for novice musicians as the chord buttons on an accordion. A few years ago, the NYU Music Experience Design Lab launched a web application called the aQWERTYon.