Archive for the ‘17 edo’ Category

Aeolian Edit 2 (17 edo)

Monday, June 13th, 2016

aeolian_edit_2 Click graphic to see the tuning and “score” in the melodyne screen capture.

Aeolian Edit 2 is an experiment with manipulation of an electric aeolian harp sample which I added counterpoint and retuned to 17 edo (equal division of the octave). Since the electric aeolian harp yields only harmonics what has been manipulated are the pitch values that the melodyne detection routine decided were root pitches and *not* harmonics. By retuning to 17 I have recomposed the original content into something other than a pure harmonic relationship. My apologies for the large volume changes – in this case I’d rather have close to a constant loudness but do not have that worked out yet.

Piano Exercise in 17 Notes per Octave

Wednesday, May 18th, 2016


Piano Exercise in 17 Notes per Octave is an attempt to write something playable for a piano student that has modest skills. The score is purposely scordatura because I think that notating in various microtonal accidentals is simply a burden when a person with a 12 equal midi controller and microtonal aware sound source set to 17 notes per octave (like a free Xen-Arts VSTi) can simply play the score as if it was written for 12 equal but the sound will be in 17 equal and produce the microtonal music of the score. A note on the composition – it is a of a nested ABA’B’ form.

The full score is here. Academic performance in a setting where a fee is charged is allowed. Any other commercial use without my permission is not. Please write me for permission in such a case, I haven’t told anyone no as of yet 🙂

Thank you Neil Haverstick for suggesting this project.

The 17th Day (video, ambient)

Sunday, May 15th, 2016

Video by Chris Vaisvil

The 17th Day was realized with an Oxygen 25 and linplug CrX 4

In Memory of You

Monday, May 2nd, 2016

Photo by Chris Vaisvil

In Memory of You is a solo improvised piece for synthesizer in 17 note per octave (equal division of the octave edo) tuning played on a Roli 49

Loosely Controlled Variations

Monday, April 18th, 2016

S0413364crop Picture by Chris Vaisvil

Loosely Controlled Variations is a short piece created by using scalegen to create a file for 17 edo tuning for Gestrument and then performing on the Gestrument a mix of 17 edo with just a little 12 edo.

Melodyne pitch set analysis of this piece

Melodyne scale analysis of this piece

Anacortes Refinery Disaster (electronic ambient)

Saturday, April 9th, 2016

Anacortes_Refinery_31911 Photo credit: Walter Siegmund
Creative Commons Attribution-Share Alike 3.0 Unported license.

Anacortes Refinery Disaster is a performance in 17 edo on a Linnstrument driving Diva, Brazile, and Ace. Each synthesizer is in Midi Polyphonic Expression mode.

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.

A Short Study in 17 Equal (piano)

Wednesday, March 23rd, 2016


A Short Study in 17 Equal (piano) performed on a Linnstrument.

And I… (17 edo and BP)

Tuesday, January 19th, 2016

S0100055crop Photo by Chris Vaisvil

And I… is a multitrack piece using four instances of Aalto in 17 edo with each track played on a Linnstrument recorded in Sonar and exported. Then 17 edo the export was retuned to Bohlen-Piece tuning via Melodyne Single Track

Bohlen-Pierce version

L’Orchestre plastique (17 edo electronic)

Sunday, January 10th, 2016

CIMG0589rs Photo by Chris Vaisvil

L’Orchestre plastique is a serial composition for Brazile performed on the Linnstrument in 17 notes per octave tuning.