Archive for the ‘Blue JI’ Category

Blue JI in A Minor

Wednesday, September 20th, 2017



A meditation in A minor in Blue JI tuning (devised by John O’Sullivan) using Pianoteq 6.01 with a modified Steinway D Prelude patch

Tuning Comparison La cathédrale engloutie

Thursday, June 9th, 2016

Catedral_da_Sé_em_São_Paulo

12 edo


12 edt (brief silent period towards end because tuning is so wide)


11 edt (brief silent period towards end because tuning is so wide)


Carlos Super Just


O’Sullivan Blue JI

Link to adaptive Just Intonation brass ensemble version.
Legend of Ys

This piece is based on an ancient Breton myth in which a cathedral, submerged underwater off the coast of the Island of Ys, rises up from the sea on clear mornings when the water is transparent. Sounds can be heard of priests chanting, bells chiming, and the organ playing, from across the sea.[2] Accordingly, Debussy uses certain harmonies to allude to the plot of the legend, in the style of musical symbolism.

To begin the piece, Debussy uses parallel fifths. The first chord of the piece is made up of sonorous Gs and Ds (open fifths). The use of stark, open fifths here allude to the idea of church bells that sound from the distance, across the ocean.[3] The opening measures, marked pianissimo, introduce us to the first series of rising parallel fifth chords, outlining a pentatonic scale. These chords bring to mind two things: 1) the Eastern pentatonic scale, which Debussy heard during a performance of Javanese gamelan music at the 1889 Universal Exhibition in Paris,[4] and 2) medieval chant music, similar to the organa in parallel fifths from the Musica enchiriadis, a 9th-century treatise on music.[5] The shape of the ascending phrase is perhaps a representation of the cathedral’s slow emergence from the water.

After the beginning section, Debussy gently brings the cathedral out of the water by modulating to B major, shaping the melody in a wave-like fashion, and including important narrative instructions in measure 16: Peu à peu sortant de la brume (Emerging from the fog little by little). This shows Debussy at his closest manifestation of musical impressionism.[6] Then, after a section marked Augmentez progressivement (Slowly growing), the cathedral has emerged and the grand organ is heard at a dynamic level of fortissimo (measures 28-41). This is the loudest and most profound part of the piece, and is described in the score as Sonore sans dureté. Following the grand entrance and exit of the organ, the cathedral sinks back down into the ocean (measures 62-66) and the organ is heard once more, but from underwater. To attain these effects that reflect images of the castle, most performers use specific techniques with regards to pedaling and articulation to affect tone color. For example some performers use their full body weight to depress keys to create a rich sound. Also performers create a ringing bell sound by instantly releasing pedaled notes. Finally, the cathedral is gone from sight, and only the bells are heard, at a distant pianissimo.

Simple Piano Piece in Blue Just Intonation

Monday, April 25th, 2016

027crop Picture by Chris Vaisvil

Simple Piano Piece is a short composition in John O’Sullivan’s Blue JI tuning on my Linnstrument

xenharmonic wiki page for the tuning
Animated score below

For the Eel River (Blue JI)

Friday, April 15th, 2016

IMG_8029cropPicture by Chris Vaisvil

For the Eel River is a short improvisation in John O’Sullivan’s Blue JI tuning on my Linnstrument using a layout like that of GeoShred which makes it pretty easy for me to play music in 12-ish tunings.

runway lights at night (Linnstrument Improvisation in Blue JI)

Saturday, May 16th, 2015

I recommend viewing full screen or at least at the native 640 x 480

audio only

For those looking for the details below is a capture of the midi stream pianoteq sees in a different improvisation.

Lazarus Awake! (Solo piano in Blue JI tuning)

Thursday, March 13th, 2014

'The_Raising_of_Lazarus',_tempera_and_gold_on_panel_by_Duccio_di_Buoninsegna,_1310–11,_Kimbell_Art_Museum

it will take a little while for the music to load and play
Lazarus Awake! (a prelude to psalm 62) is a short piano piece in one of my favorite tunings, John O’Sullivan’s Blue JI.

Updated Tubular Bell, Piano, and Lute Timbre Tuning Comparison

Tuesday, January 1st, 2013

196px-Adams_Bass_ChimesI have put together a fairly large tuning comparison using physically modeled tubular bells [click me]. I hope you enjoy it.

Autumn Moon

Thursday, September 20th, 2012

Autumn Moon was created using 4 instances of ZETA+ 2.1, an M-Audio 88es, Korg nanoKontrol, and Sonar X1. The tuning is John O’Sullivan’s Blue JI.