Archive for the ‘17 edo’ Category

The Temple of Clouds

Saturday, September 24th, 2016

img_2165rs Picture by Chris Vaisvil

The Temple of Clouds is a combination of processed electric 17 edo guitar and timelapse video – at about 5 through 6 minutes you can see a thunderstorm come through. The video was recorded with a Brinno TLC200 time lapse camera.The tuning is unknown though a 17 edo guitar was used to generate the starting point.

Two 17 edo Guitar Centered Pieces

Wednesday, September 21st, 2016

img_2175crop Photo by Chris Vaisvil

Piece for solo 17 edo guitar

Piece for 17 edo guitar with effects and used as a faux 17 edo bass accompaniment

I think the relationship between the two pieces are pretty obvious. The top one started a number of harmonic ideas that get expanded in the bottom ensemble.

Red Sands Maunsell Forts

Friday, August 5th, 2016


Red Sands Maunsell Forts is quasi-ambient piece constructed from loops taken from a 17 edo guitar improvisation and the subsequent loops processed and live sequenced using Sonar’s matrix view (the graphic below). While it doesn’t have the flexibility of Albelton Live, I find the the constructs to be interesting despite being laborious to set up.


click to enlarge

Indian Blues Fusion in 17 edo

Thursday, August 4th, 2016


Indian Blues Fusion in 17 edo uses my electric DIY tanpura guitar tuned to 17 edo, electric 17 edo guitar and Indian percussion.

The McMurdo Session – Xenharmonic Gang of Five

Saturday, July 30th, 2016

xenharmonic_gang_of_five Left to Right Andrew Heathwaite, Aaron Krister Johnson, Jacob Barton, Dan Stearns and myself

These recordings are totally unrehearsed improvisations that took place at my home. As a consequence there is wandering and going down paths that were discarded. I attempted to curate the best parts of an all day session. Much of the music wouldn’t make sense without enduring the development before something jelled. Two pieces of this session were previously released and are included here to complete the session. Instruments – voice, trombone, udderbot, clarinet, 15 edo, 17 edo, 19 edo, 20 edo, 22edo guitars and fretless banjo, guitar and bass, gongs, Tibetan singing bowls, DIY erhu, 31 edo bouzuki, various electronics and percussion. We freely mixed tunings and our compositional goal was to have a good time! We hope you enjoy these recordings.

The Gift of Structure

I Forgot Your Hat

Racetrack Playa

vacuum energy jello

La Mystique des Quinze

Carry On

The One True Tuning

Two Pieces for 17 edo Guitar

Friday, July 15th, 2016


For clean 17 edo guitar

For two 17 edo guitars in 17 edo’s version of the whole tone scale. The whole tone scale in 17 equal (edo) is unusual in that being an odd-numbered tuning it takes 3 octaves before the scale comes to its starting point. Each step is three steps of the 17 equal 70.59 cent small step – a total of 211.76 cents. I try to keep myself constrained to the scale but do stray at times. A longer version with percussion is here.

17edo_whole_tone.txt an asterisk indicates a wholetone scale tone.

Shanidar Cave (17 edo)

Thursday, March 31st, 2016

Erbil_governorate_shanidar_cave Date 3 August 2006 (original upload date)
Photographer JosephV at English Wikipedia

Shanidar Cave is a piece in 17 edo that features an electric 17 edo guitar and what is essentially an electric tanpura which ends up making this a sort of fusion of middle eastern and Indian music in a sense. The tanpura is the result of a the installation of a “sitar” buzzing bridge that was to make a spare strat copy into an electric sitar. It turned out to be so difficult to adjust the intonation I gave up and let it lay fallow for a couple years until I hit upon the tanpura idea recently – an instrument without frets and therefore without a need for intonation adjustment. The bridge was sold by eyb guitars for 125 euros. A photo of the bridge is below.

The Loop (17 equal)

Saturday, October 31st, 2015


The Loop is an experiment in audio manipulation. It was made by taking sections from a 17 edo electric guitar recording and manipulating the individual notes to change the harmonies and sequences in Melodyne Single Track using their “Direct Note Access” with the Melodyne tuning set to 17 edo. Then the 10 fragments were stretched with Paul’s Extreme Sound stretch. After that the fragments were arranged into two stereo tracks in Sonar, effects applied, exported and normalized.

Target Practice (17 edo electric guitar duet)

Monday, April 27th, 2015


Target Practice download

Red Giant (polytuned)

Friday, March 20th, 2015
"Sun Red Giant" by Tablizer at the English language Wikipedia. Licensed under CC BY-SA 3.0 via Wikimedia Commons

“Sun Red Giant” by Tablizer at the English language Wikipedia. Licensed under CC BY-SA 3.0 via Wikimedia Commons

Red Giant, drums, synthesizers, 17 equal guitar, voice.

Earth’s fate
Main article: Future of the Earth (from Wikipedia)
Above is an artist’s depiction of the Sun entering its red giant phase viewed from Earth. All life on Earth is extinct at this phase.

During the Sun’s life in the main sequence, the Sun is becoming more luminous (about 10% every 1 billion years, at the present time). The surface temperature of the Sun is almost constant. The increase of luminosity is essentially due to a slow increase in the solar radius. The increase in solar luminosity is such that in about another billion years Earth’s water will evaporate and escape into space, rendering it inhospitable to all known terrestrial life. Earth is not expected to survive the Sun’s transition into a red giant. At its largest, the Sun will have a maximum radius beyond Earth’s current orbit, 1 AU (1.5×1011 m), 250 times the present radius of the Sun. By the time the Sun has entered the asymptotic red giant branch, the orbits of the planets will have drifted outwards due to a loss of roughly 30% of the Sun’s present mass. Most of this mass will be lost as the solar wind increases. Also, tidal acceleration will help boost Earth to a higher orbit (similar to what Earth does to the Moon). If it were only for this, Earth would probably remain outside the Sun. However, current research suggests that after the Sun becomes a red giant, Earth will be pulled in owing to tidal deceleration.