Website here is being developed to explain Intonalism, which is a system of classical music composition that takes tuning into account in the creating of melodies, harmonies, and formal structures of music. In the connection with melody, it can be thought of as a new Bel Canto science.
Each composition created under Intonalism uses a form of planned just intonation based on keys. A key may be thought of as a small constellation of related notes, chords, and scales. For example, C major uses three pure major triads, each of which is a pure perfect fifth combined with a pure major third; specifically, these three triads are the tonic, dominant, and subdominant known in traditional music.
Continuing to use the concept of constellation, each of these related chords, that is, the tonic, dominant, subdominant, mediant, and submediant has a typical scale, and to form the typical scale for each chord other than the tonic itself, one must bring in a few new notes. The dominant scale requires a new note, the F# in C major, and a new tuning indicator which shows that the sixth scale degree is tuned higher so that the dominant of the dominant, a D major triad in the original C major constellation, is again a pure major third, with its fifth the ^A tuned a pure perfect fifth above the D, and its third, the F#, a pure major third above the D. That scale, then, the scale on the dominant of C major, becomes C ^A B C D E F# G.