Solo Jeff Kaiser’s solo performances move from acoustic to surround sound, from unadorned to multi-screen video…from serious to humorous. Using custom software and hardware along with his flugelhorn, quartertone trumpet, voice, and random props, it is …

KaiGen — Interactive and Generative Software by Jeff Kaiser—Max for Live Plugins and Max Projects

KaiGen Product Image
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“[S]ome of the most interesting and idiosyncratic free audio effects out there…”
—Cycling 74

“The KaiGen Suite is a collection of some of the most interesting generative plugins that we’ve ever seen…”
—Keith McMillen Instruments

“This is a deep and powerful set of generative tools.”
—The Pro Audio Files

“…cool little powerful device.”
—The Producers Kitchen, Max for Live Roundup: 5 Free Instruments

KaiGen is an interactive and generative software suite I have developed solely for use in Ableton Live (as a Max for Live plugin) or in Max/MSP (Project files included) from Cycling ’74. These were first shared as Max patches beginning in 2006, developed for use by Made Audible beginning in 2008, and are used extensively in my upcoming (2021) CorpseBoy album.

These are provided free, as is, no tech support included. If you do have an issue that you think I should know about, please do send me a message via the contact page.

While you are here, please take a moment to subscribe to my YouTube Channel, experimental music, tutorials, and more.

KaiGen-M can be used to generate melodies, bass lines, harmonies, and more.
All bass lines, horn parts and percussion parts in this video are generated by KaiGen, running Kontakt in Ableton Live.

KaiGen-R can be used to generate rhythms, velocities, durations, and more.
All bass lines, horn parts and percussion parts in this video are generated by KaiGen, running Kontakt in Ableton Live.

KaiGen-Smaple-Palyer is a sample player that allows you to easily drag and drop files live, randomize their occurrence, change their pitch and direction, or: tie them to a beat. All mapped to your Push.

KaiGen-I-Ching uses the I-Ching (coin-method) to generate hexagrams that are then used to create program changes for your MIDI instruments. Please note: Not all plugin synths support program change via MIDI, so this may not work on some. In some synths you will need to build a Program List (Native Instruments) or Bank that the KaiGen-I-Ching will access and change.

Or you can just use it as an oracle during your Ableton Live sessions.

The intro music was all generated with KaiGen-I-Ching and KaiGen-M using Massive from Native Instruments.

Also included: KaiGen-C. KaiGen-C generates controller information that can be smoothed and manipulated in different ways. The ultimate control change knob twiddler.

Updated Nov. 14, 2020: fixed some bugs, more consistent appearance, added Max Project folders.

Updated Jan. 31, 2017: Now includes Max abstraction of the pulse generator and probability gate. Included, but not shown i the videos above is KaiGen-C. KaiGen-C generates CC data to twiddle knobs in different ways.

Software is “Name Your Own Price.”
$0.0 is fine, but if you would like to contribute, any amount is appreciated. Thank you!

The Choir Boys: Jeff Kaiser and Andrew Pask

The Choir Boys: Jeff Kaiser Andrew Pask

The Choir Boys! Jeff Kaiser and Andrew PaskEveryone’s plugged into something and the result is an urgent, witty and often moving collage of acoustic and electronic sound which doesn’t draw attention to itself, but lets some …

Made Audible: Jeff Kaiser and Trevor Henthorn

Made Audible: Jeff Kaiser and Trevor HenthornProbability-based Electronica, since 2008About: Made Audible sonifies information—working with the many possibilities of sonification, from data to concepts, from science to politics. Made Audible uses Ableton Live, Ableton Push and …


Resources for Students in Music Technology

[This material may be out of date. It is now being maintained, and regularly updated at] I started this list for my students at the University of Central Missouri’s Music Technology Program as an exploration …

Jeff Kaiser and Andrew Pask with Steuart Liebig and G.E. Stinson: The Choir Boys with Strings (PFMCD037)

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The Choir Boys with Strings
Jeff Kaiser: Trumpet, Quarter-Tone Trumpet, Flugelhorn, Electronics
Andrew Pask: Clarinet, Bass Clarinet, Alto Saxophone, Bass Penny Whistle, Electronics
G.E. Stinson: Electric Guitars, Electronics
Steuart Liebig: Contrabass Guitars, Electronics

Visit The Choir Boys home page at:

1. Needlework Alice 11:59
2. Impromptu Lateral Drop 7:26
3. Tobacconist from Rimini 10:59
4. Frenchwoman Luggage Cart 8:39
5. Adulterous Dishwasher 9:40
6. Definitely Jack 10:23
7. Rest of the Skeleton 15:12
8. Wir Sind Hier 5:28

The music was created in two continuous suites.
Track numbers have been added for convenience.
Suite One: Tracks 1-5. Suite Two: Tracks 6-8.
Total Playing Time: 79:46

All music © 2006, Jeff Kaiser Music, ASCAP and Kaleidacousticon, ASCAP
Digital multitrack recording by Wayne Peet, October 5, 2005 at Ventura College Theater, Ventura, California
Art, Layout, Mixing and Mastering by Jeff Kaiser, January 2006
pfMENTUM • • Box 1653 • Ventura • CA • 93002

Special thanks to Robert Lawson and Ollie Powers for the invitation to perform,
and to Roger Meyer for staging and lighting the show.



Jeff Kaiser / Tom McNalley / Ted Byrnes: External Logic Machine (PFMCD066)

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Jeff Kaiser • Tom McNalley • Ted Byrnes


External Logic Machine
Jeff Kaiser: Bb trumpet, quatertone trumpet, flugelhorn
Tom McNalley: Acoustic guitar, tricone resonator guitar
Ted Byrnes: percussion

1. A Disciplinarian Society
2. Attention to the Locality
3. Blood and Genes
4. Cooperation Among Productive Sites
5. For an Entire Working Life
6. Frontier and The Idea
7. He Gave Us A Toolbox
8. Hibernation
9. In Order to Preserve Order
10. Particularly Clear in the Case
11. Potential Rationale
12. The Disequilibria of Circulation
13. Thousands of Daily Practices

Recorded by Jeff Kaiser and Ben Power 3.23.2011 at the ICAM Studio, University of California San Diego
Mixed and Mastered by Jeff Kaiser
Design and layout by Ted Byrnes and Jason Tauritz

All compositions ©2011 Jeff Kaiser Music, ASCAP; Tom McNalley Music, ASCAP