31-tone Singing Camp

31-tone Singing Camp was an initiative by Jacob Barton predating the Xenharmonic Praxis Summer Camp series of events.

The design was simple: get together some micro-curious friends and strangers to spend several days over a week practicing 31-tone intonation, and its just intonation cousins. Free.

We used pure (revo) and mixed (evo) Sagittal notation to notate 31.

There were 3 sessions:

1. May 2007, Houston TX
   • Thomas Scheurich
   • Brian Nelson
   • Bryan Parkhurst
   • Ryan Stickney
   • Elliot Cole
   • Stephan Hammel
   • Ting
   • Andrew Broz
   • Ann
   • Dan Sedgwick
2. July 2008, New York, NY (Poster (PDF))
3. July 2008, Apple Hill Chamber Music Festival, NH

Traces from the Camps

• genesis of Spiral Progressions
• genesis of Difference Tone Progressions
• reading of Magnus Jonsson's Walking to Class, two takes walking 1.mp3 walking 2.mp3
• 31-tone mockup of Gesualdo's Moro, lasso, al mio duolo (not enough attendees to sing through)
• improvised madrigal in free intonation (text: Lewis Carroll: Haddocks' Eyes) Haddocks' Eyes.mp3
• various written exercises, collaborative canon in 15/16 time
• 31 basics handout

Important listening

• Toby Twining: Chrysalid Requiem
• Ben Johnston: Kepler Quartet: String Quartets 2,3,4,9.

Important reading

• Kyle Gann's Just Intonation Explained article, very clear: http://www.kylegann.com/tuning.html
• Paul Rapoport: About 31 tone equal temperament: https://www.huygens-fokker.org/docs/rap31.html
• Relevant articles in Xenharmonikôn (at Fondren) http://xh.xentonic.org/