Monophonic Step Sequencer Max for Live Device

I have converted a Max patch I build into a Max for Live device as an exercise for learning M4L. The original patch is a monophonic step sequencer that I wrote about in Step Sequencer Built in MaxMSP. I ran into some difficulties converting the patch along the way. Although it worked perfectly in Live, for some reason it was causing Live to crash after saving. It was also not storing the values in the Live number boxes, drop-downs, and sliders. The problem went away when I went through the tedious process of recreating the patch rather than copying and pasting my original work. This is a little worrisome since the next conversion will not be so simple (Multitouch Rotary Dial and X-Y Granular Exploration). Here’s an audio example with a little reverb to give you an idea of what it does.

M4L StepSequencer

Frequency Modulated Drone Generator


I’m currently working on a sound design project for a client who is looking for a way to generate specific sorts of sounds using easy to understand controls. I started by creating a frequency modulated drone generator. The tool has a mixer with six preset pitches plus noise. I also included amplitude modulation, with sliders to control the amount, LFO, and a frequency multiplier to allow for FM synthesis effects. Here’s an audio example that illustrates the range of sounds possible with this set of fairly simple and intuitive controls.

Drone Tool Example

Upcoming Ostraka Performance and New Album

My experimental music project, Ostraka with Graham O’Brien on Drums, is performing on January 27, 2010 at Big V’s in St. Paul, Minnesota. I’ll be on laptop using my custom developed application, the Gestural Music Sequencer (GMS). I’m also using my iPod Touch controlled grain-table glitch generating Max patch for another layer of texture. Chain Fight and Juhyo round out the bill.

It’s also about time I mentioned that I’m in the process of producing a new Ostraka album that features Graham O’Brien on drums. We recorded it recently at Masters Recording, formerly Flyte Tyme of Jimmy Jam and Terry Lewis fame. The studio was just sold again and from what I understand will be called Madison Media Institute. In any case it was an amazing facility to lay down tracks. Here’s a shot of our setup in Studio A.

Video of Fives Performance

Five Movements for Five Sampled Sounds in Five Loud Speakers from Unearthed Music on Vimeo.

This video was shot during a performance of Fives at the University of Minnesota last December. The sound quality is poor, but I think it illustrates how I was able to sort of “pour” my looped granular experiments into each of the five channels using the iPod Touch as a controller. For more about this project visit my portfolio site at www.johnkeston.com.

People on Shelves


Andrea Streudel just posted some really nice video documentation of the People on Shelves exhibit that was performed on December 9, 2009 at the West Bank Social Center, using music I created during the show. From the original post, “The world premiere of maw.shelves, a software for dynamic 3-dimensional projection. We overlaid another projector to place our real-time, full-body silhouettes on the “shelves”. Music was performed live by Ostraka.” Checkout Minneapolis Art on Wheels for more details.