  |
American Festival of Microtonal Music - http://www.afmm.org/
The AFMM produces and commissions works which use pitches and musical scales which are not organized in the standard twelve tone to the octave equally tempered way. |
  |
FreeNote Music: Microtonal Guitars & Recordings - http://microtones.com/
Microtonal instruments, recordings and books. |
  |
LucyScale Developments - http://www.harmonics.com/lucy/
LucyTuning is a microtonal system derived from pi, and the writings of John 'Longitude' Harrison. |
  |
Lucy Tuning - http://www.lucytune.com/
Lucy Tuning is a microtonal music system derived from pi and the writings of John Harrison. |
  |
Julian Carrillo and the Thirteenth Sound - http://paginas.tol.itesm.mx/campus/L00280370/julian.html
Mexican music creator of microtonal system called the 13th Sound. In English and Spanish. |