Archive for the ‘aleatoric’ Category

For bowed gongs and golden ration tuned piano (and bonus track)

Thursday, August 13th, 2015

Music Studio

Bowed gongs and a piano tuned to a Golden ratio derived tuning (see below) and driven by Melodyne’s polyphonic interpretation of the gong track.

1/4 comma meantone tuned piano driven by the same gong derived score.

Golden tuning created and explained by Jake Freivald

Hommage Pour Paul H. Muller

Tuesday, August 4th, 2015

This is an ambient music video in tribute to my colleague Paul who has been experimenting with constrained aleatoric compositional techniques. This is the sound of my electric aeolian harp combined with time lapse video. The harp is a constrained aleatoric device because I tune the string but the wind plays the strings which generates harmonics of the strings.
audio only


A Trip to the MSI in JI (video)

Sunday, August 2nd, 2015

A montage created from a trip to the Museum of Science and Industry in Chicago. All of the audio in this video comes from the visit processed to some degree. The “music” is tuned to Just Intonation by Melodyne. This wide-screen video is best enjoyed full screen since there is significant detail.Untitled

audio only

22″ Wind Gong Audio Spectrum Manipulation With Animated Visualization

Sunday, July 5th, 2015

The video is of the base 22″ Wuhan gong hit after 35x Paulstretch with the noise reduction on. What remains are the isolated gong tones buried in the crash and the drawn out “hum” tones. Caution – there are some very loud, high pitches. Best viewed at the highest resolution you can manage.

The above is the audio spectrum of the noised reduced and 35x stretched track using a FFT transform. Click the picture to enlarge it.
Gong, stretched and noise reduced download

With the gong tones in Melodyne I was able to retune them to 22 edo porcupine with magic 7th variant (below) – for my taste I used Melodyne to remove the highest “hum” note which I disliked.
Retuned gong download

! C:\Cakewalk\scales\22ET.scl
22 ET magic 7th porcupine

For Chamber Ensemble, Grain Silo, and Wrecking Ball in 1/4 comma meantone with Video

Sunday, June 28th, 2015

For Chamber Ensemble, Grain Silo, and Wrecking Ball in 1/4 comma meantone is a semi-aleatoric recomposition of midi extracted from a multitrack analog synthesizer piece called “Iron Harvest“.

Using Melodyne Single Track I extracted the midi from each analog synthesizer track. This was rather interesting in itself since non-traditional pitched elements of that performance were interpreted as pitched material. So, for example, a change in filter resonance created an additional pitch. This rich input material was then edited and used as a score for the the ensemble.

The ensemble consists of solo strings (violin, viola, cello, and double bass), solo alto flute, bass trombone, contra-bassoon, bass clarinet and harp (with arpeggio applied) from the Garritan Personal Orchestra sound set with the included 1/4 meantone tuning (below). The video was shot with a Fujifilm exr F660 while on a trip to a different destination, in other words, “a happy accident”.

The sound of the wrecking ball and the collapsing grain silo are used as found sound percussive elements in this piece. The video sound track was cleaned by noise reduction and application of a noise gate to keep most of the sound of the strikes and falls minus the background traffic noise. Pickup truck not provided by Ford Motor Company.

Audio only download

Full quality video download (374 MB)

! meanquar.scl
1/4-comma meantone scale. Pietro Aaron's temp. (1523). 6/5 beats twice 3/2      

a gentle wind across the plains of Pluto (harmonic series)

Friday, June 12th, 2015


a gentle wind across the plains of Pluto is processed aeolian harp. I put new guitar strings on my harp which made it much more sensitive.

Two Inventions for Looped Analog Synthesizer

Wednesday, May 27th, 2015


These are demonstration pieces of a technique
– not intentional pieces of music…

The title should really be SIGNAL looped analog synthesizer.

The basic idea is to use the Korg mini MS-20 as a sound source and use a delay in the signal path to return the delayed signal to the Korg’s frequency to control voltage converter. This is then sent to another delay / reverb to attempt to smooth some of the sharp changes. Invention 2 is the more musical of the two inventions and relies on sound on sound to fill out the signal. Invention 1 is using a long delay time. The graphic, crude as it is, contains the actual signal path. The motive is to find some other way than a sequencer or LFO to generate a self-performing analog system.

Invention 1

Invention 2

Snow and Wind (Electric Aeolian Harp)

Wednesday, February 4th, 2015


Snow and Wind – the electric aeolian harp played by snow flakes impacting the strings and of course wind during a light snow.

HL Tau (Music for Concentration II)

Saturday, December 27th, 2014


HL Tau (Music for Concentration II)

Music for Concentration – Electric Aeolian Harp (harmonic series)

Sunday, November 2nd, 2014

music_for_concentrationclick to enlarge

Music for Concentration – 40 minutes of selected electric aeolian harp samples taken from a two day wind event 2014-10-31 through 2014-11-01 – right click and select download to access the 93 megabyte mp3.

More on the instrument used
More on aeolian harps in general