Category Archives: GMS

The GMS (Gestural Music Sequencer), written in Processing.org by Unearthed Music recording artist and AudioCookbook.org founder John Keston, analyzes video input and converts it into a sequence of musical information in real-time. Each frame is processed to find the brightest pixel. The x coordinate is converted into pitch while the y coordinate is translated into dynamics. The application was also designed to use probability distributions on pitch and durations.

GMS Ensemble Live Performance Segment #2

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Here’s another segment of video from the Flashbelt after party on June 8, 2009. The music is still Graham O’Brien on drums and me using the GMS.

However, the visuals shown are mostly part of an excellent piece on gender transformation by Sinan G. of minneapolisartonwheels.org.

I think this short chunk of video is an accurate illustration of the spirit of the party.

In my mind the best parties are always in alleyways, sometimes in warehouses, and once in a while in apartment kitchens.

Click to view a 640 x 480 version of GMS Ensemble Live Segment #2.

 

GMS Ensemble Live Performance

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Nils Westdal shot this video of myself and Graham O’Brien on drums performing with the GMS during one of the Flashbelt after parties on June 8, 2009. The party was held in the back alley of One on One bike studio, considered the bike Mecca of the Midwest.

Recorded using the internal mic on the video camera, the mix is chatty and pretty drum heavy for the first half, but you can hear the GMS sequencing a little better toward the end.

The setup consists of a MacBook Pro running the GMS synced to Ableton Live 7, an M-Audio Firewire 410 interface, a Mackie 1202 mixer, my Korg MS2000 for external control of the GMS, a Casio projector, and a variety of bike lights and spinning LED tops as “light controllers”.

Click to view a 640 x 480 version in a new tab.

Gestural Music Sequencer Documentary Short

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Josh Clos produced this documentary short about the GMS recently. He and his colleagues Julie Kistler and Brian Smith shot video during my performance in Downtown Minneapolis with Minneapolis Art on Wheels on May 13, 2009. Later Josh interviewed me in the audio studio at Art Institutes Minnesota where I teach interactive media and audio production. As a student in my audio production class, Josh edited the sound and video together with minimal input from myself. His short illustrates what the GMS does and how I’ve been using it to compose music in real-time. Thanks, Josh, for a job well done!

Speaking of the GMS, I have recently slowed down its development, and I’m considering releasing a beta version of the application in a few months. Soon afterward I plan to release the code as Open Source so that the application can be developed further by artists interested in creating music through gestural input.

Microtrack Using Electric from Ableton Suite 8

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ElectricSince getting Ableton Live 8, I have yet to use it for a show due to performance issues and a lack of time to troubleshoot what’s causing garbled audio. I don’t have the same problem with 7, so perhaps 8 has more overhead. I’ll be looking into this soon. In any case I have had the opportunity to experiment with some of the instruments, including Electric. Although I still prefer the sound of my actual Rhodes pianos, Electric does a great job of simulating them, but more importantly it is capable of producing entirely new Rhodes-like instrument sounds. Here I started with an instrument out of the rack, tweaked it a little and then used it to play a loop I originally captured using the GMS.

Electric Microtrack