Archive for the ‘composition’ Category

watching leaves grow (17 edo ambient & time lapse video)

Saturday, June 17th, 2017


Over a month of hourly time lapse (night edited out) with 17 note per octave ambient guitar accompaniment. This is probably the longest project I’ve set out to do. I left my time lapse camera in the kitchen window filming the tree in my backyard this spring from 3/18 to 4/25. I’m fairly happy with the result and the extra long time lapse brings out movement in the tree and finally in the leaves that would be hard to see otherwise. It appears that the tree leans and moves based on prevailing winds – even modest winds. The seventeen note per octave guitar was recorded direct in. The signal path was guitar => Ernie Ball VP Jr volume pedal (250k model #6180) => Univox Super Fuzz => Sonar with Breverb using the a cappela convolution expanded to 14 seconds.

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Bonus 17 edo guitar played in a classical style

Sweeney’s Agony

Saturday, June 10th, 2017

A fair use illustration of using a poem fragment from Sweeny Agonistes as song lyrics. What is unusual about this piece by Eliot is that it was intended to have musical rhythms in the meter, though conceived in a jazz context. Here is an illustration in a blues context. Source is Collected Poems 1909 – 1935 Copyright T. S. Eliot.

Sweeney’s Agony – Johnny Pumphandle Remix
Sweeney’s Agony – First version

Vocal, fretless electric guitar, rhodes (Dimension Pro), tenor sax (Dimension Pro), and drums (Session 3 drummer). All but the drums are live performances.

Its a Glitch (Just Intonation, Video)

Friday, May 19th, 2017


using melodyne, sonar, audacity and movie studio – version 2 audio track (which I prefer)
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using melodyne, sonar, audacity and movie studio – version 1 soundtrack
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Rivendell for altered voice and percussion

Saturday, May 13th, 2017


Rivendell is a short piece performed on the Alesis Q49 using Kontakt, Exhale, and Requiem.

BitWiz Harmonic Series Code

Saturday, May 6th, 2017


BitWiz is a $0.99 app that lets you run single line C code music generation algorithms. I used it to perform this piece by selecting code in sequence and using the X-Y manipulation when it was a part of the code. This software from Kymatica is for the iPad. The analysis shows that at least the first section is clearly non-12 equal. I didn’t analyze the rest, however, it seems to me to be almost next to impossible for a single line of code to generate something as unnatural as 12 equal.

Click the picture to enlarge the Melodyne analysis of section 1 or the spectrum analysis of the Gong piece below.

As a bonus For Gongs, Bow, and Super Balls with Effects

Slide for More (9 edo for strings, brass, and woodwinds)

Sunday, April 30th, 2017


Slide for More is a composition for strings, brass, and woodwinds realized through Sonar and Kontakt’s factory library. Scoredatura is linked here. Picture by Chris Vaisvil

Its a Burden (a Capella Semaphore 19)

Sunday, April 30th, 2017

Its a Burden in Semaphore[19] retuned by Melodyne from the 12 equal version

Its a Burden in 12 equal

Its a Burden compared – left is 12 equal, right Semaphore[19] – on speakers the changes in tuning is very evident

click the file to see the enlarged Melodyne view

The 19th Sky of Semaphore

Saturday, April 8th, 2017


The 19th Sky of Semaphore is a composition for an imaginary chamber ensemble of two semaphore 19 tuned pianos. Photo by Chris Vaisvil
For comparison I present the same piece in 19 edo. If you listen closely you can hear slight beating in the opening 5th of the piece in the 19 edo version but is not present in the sempahore19 version.

! E:\cakewalk\scales\semaphore-19.scl
!
semaphore19
 19
!
 51.92500
 103.85000
 155.77500
 250.38500
 302.31000
 354.23500
 448.84500
 500.77000
 552.69500
 604.62000
 699.23000
 751.15500
 803.08000
 855.00500
 949.61500
 1001.54000
 1053.46500
 1105.39000
 2/1

Harmonic Series Piano

Sunday, April 2nd, 2017

Raw harmonic series tuned piano

Here is how this piece was made. I played a 12 string electric guitar with a Wampler sustain pedal and Roland Space Echo pedal. Normalized, and reversed that track. Then I used Melodyne to extract a polyphonic midi representation – more or less that same as what the guitar sounded like. Then I added a midi echo effect that is called echo delay which also has a swing setting. The midi output of that was chained into Sonar’s track midi quantization and additional arpeggiator. This midi stream was then into to Kontakt with the tuning set to the harmonic series as show in the photo below.

Parva Keyboard Slope Tuning with Melodyne Analysis

Tuesday, March 28th, 2017

Click on picture to enlarge and see the Melodyne analysis of the unknown tuning.

By using stacked keyboard note to frequency settings in the Parva modulation matrix I happened on this tuning that has a very nice sounding 318 cent near just minor third and a 1470 cent “9th” interval. This -almost- closes at the octave + tritone – which is close enough that Melodydne doesn’t show the octave with the default settings thinking it is an overtone.

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This re-tuning technique relies on changing the midi note to pitch relationship called in some circles the “slope” of the keyboard.