Audio Cookbook

Ostracon at In Out Festival, September 2010

Ostracon Video from Unearthed Music on Vimeo.

My project Ostracon (John Keston and Graham O’Brien) has been selected to perform at the In/Out Digital Performance Festival in New York this September, 2010. The schedule hasn’t been finalized yet, but we’ll be playing either on the 17th or 18th of the month at the Tank Theater, 354 West 45th Street, New York, NY 10036. Last year’s lineup included Monome creator, tehn (Brian Crabtree), and Peter Kirn of Creative Digital Music. From the In/Out Festival website.

In/Out is an annual festival that features leading performers, developers, artists, and tinkerers of the digital design community in hopes bridging the gap between the forum based world and the stage. The festival seeks to bring digitally driven performances into the limelight with two full days of workshops and performances.

This video is a live studio piece shot by Ai student Josh Clos, and recorded at Ai Minnesota by John Keston and Graham O’Brien. It’s representative of the music that we are generating during our live performances. For more checkout the Ostracon tag here on ACB, or visit our bio on Unearthed Music.

Experimental Music Mondays Call for Entries

I am curating a series of Experimental Music events hosted by the Kitty Cat Klub in Minneapolis, Minnesota. The first installment is Monday, March 1st, 2010. Subsequent installments are scheduled for the last Monday of every month. For the first show we have three performances.

Ostraka (myself) with Graham O’Brien on drums will be performing using the GMS. Terr the Om (Nathan Brende) will also be performing his distinct breed of electronic music, melding the output from his circuit bent toys with looping and real-time arranging in Ableton Live. Thirdly, Dialsystem consisting of brothers, Graham and Casey O’Brien will likely mesmerize listeners with their ethereal mix of bass, drums, and electronics. Music starts at 9:00pm.

I’m in the process of booking the upcoming events, so if you are a performer of experimental music and would like to get involved, please send your name, artist name, contact information, links to a biography, and links to audio examples to emm [ at ] audiocookbook [ dot ] org.

Five Output Atemporal Looper

Here’s a screen grab of a patch I’m working on to successively loop five phrases of sound repetitively. For example, looping another phrase after the fifth time will replace the first and so on. The goal of this patch is to allow me to feed in audio signals from my multi-touch glitch machine into the looper so I can build compositions for a five speaker sound art installation I’m doing at the end of this semester at the University of Minnesota.

For the example I routed outputs 1, 3 and 5 to the left channel and outputs 2 and 4 to the right channel. I also temporarily generated a randomly pitched sinusoid to run into the looper for testing. The large toggle in the upper left initiates the looping and pressing it again stops it. Currently there’s no mechanism to find zero crossings, so the result has lots of clicking in the output. To make good use of the clicks (I’ll be fixing this later) I routed the output into Ableton Live, and loaded on heaping portions of distortion and delay. If life gives you clicks, make click-on-aid.

Clicky Five Ouput Atemporal Looper Example

GMS Performance Excerpt #2

Here’s another unedited excerpt from a recent performance using the GMS. This example contains two live looped layers in a similar range at 124 bpm.

As shown in the photo, I was using a string of patio lights as one of my “light controllers” to create the sequences.

GMS Performance Excerpt #2

GMS Practice Track Number 3

I’ve almost finished with my initial round of tweaking and bug fixing on the GMS, so I’ve finally been able to put a bit more time into actually using the software for its intended purpose. My most recent work with it involves a companion document in Ableton Live that loads a number of virtual instruments into about nine separate MIDI tracks. Ableton provides the external sync via the Apple IAC (Inter-Application Communication) drivers. In turn, the GMS sends MIDI note on and off data to the instruments in Ableton. Using this method I can live loop on various tracks and build a multi-timbral composition in real-time. Here’s an example for a recent practice session.

GMS Practice Practice Track Number 3

GMS Practice Track Number 2

This recent practice session illustrates the use of external sync and live looping of MIDI data captured from the GMS in Ableton Live.

GMS Practice Track 2

GMS Performance in Downtown Minneapolis

I’ve been scheduled to perform live using my GMS this Wednesday night, May 13, 2009. I’ll be projecting against the Western wall of Art Institutes International. The reactive music will be amplified along with the projection as it is produced in real-time. Here’s the publicity statement that went out about the event.

John Keston will be performing using his gestural music sequencer or GMS on Wednesday, May 13, 2009 in the parking lot next to Art Institutes International Minnesota, 15 South 9th Street, Minneapolis, Minnesota. The GMS was written in Processing.org by Ai instructor, Unearthed Music recording artist, and AudioCookbook.org founder John Keston. His tool analyzes video input and converts it into a sequence of musical information in real-time. The live video image will be projected on the building while the musical response to the images is amplified through a sound system. For more information about the GMS visit audiocookbook.org/tag/gms/. All Ai students, staff, alumni, and the public are welcome to attend this free performance. A drawing will be held (for WDIM students only) giving away two passes to this years Flashbelt conference.

Here’s a segment from a practice session today to give you an idea about what sort of output the GMS can produce. All of the percussion, melodic lines, and bass were generated by the sequencer, then live looped to produce the results.

GMS Practice Piece in C Sharp

GMS Live Loop Experiment

Today while testing some code I had written to help lock in the GMS with external MIDI synchronization, I made a brief recording of live looping the output from the sequencer by capturing the notes in Ableton Live. Ableton was also acting as the clock source. The new feature works by initializing start times to the nearest quarter note. This way if the sequencer produces an odd number of fractional durations a simple start and stop of the GMS with the space bar will lock it back onto the quarter notes provided by the master clock. This may be a precursor to how I end up using this instrument once it is a complete package.

GMS Live Loop Experiment

Backwards Dissonant Rhodes Chord

I stumbled across this backwards dissonant Rhodes chord while going through the recorded sounds in an Ableton Live project from about two and a half years ago.

Backwards Dissonant Rhodes Chord

Panopticon Rhodes Loop

This loop of Rhodes electric piano is the basis for the track Panopticon on One Day to Save All Life (Unearthed Music, 2008). I played the Rhodes through my Memory Man delay to get a sort of watery quality then captured the recording and looped it for the piece. Here’s one instance of the loop.

Panopticon Rhodes Loop