Xenharmonic

The back cover lists "Materials and Services", including Xenharmonikon (cooperation prevails in the xenharmonic world), and persons cooperating in a tape exchange--meaning that if you send a tape of your music, to someone on the list, you get back a tape of their music.

Dissonance scores can also be applied in situations where no musical score exists, and two examples are given: a xenharmonic piece by Carlos, and a Balinese gamelan performance.

Microtonal music is sometimes referred to as xenharmonic music, the term deriving from the Greek xenia (hospitable) and xenos (foreign or strange) (Chalmers 1974; Darreg 1977; Wilson 2014).