Sources for the guitar readings
These are the works named in the circle and emotion readings.
Rameau, Jean-Philippe (1722). Traite de l'harmonie reduite a ses principes naturels
Paris: Ballard.
Formulated the fundamental bass concept (basse fondamentale) and descending fifths movement as the driving engine of Western tonality.
Cited in. circle readings
Riemann, Hugo (1893). Vereinfachte Harmonielehre
London: Augener.
Formulated the theory of harmonic functions defining the three tonal categories: Tonic (T), Subdominant (S), and Dominant (D).
Cited in. circle readings
Schoenberg, Arnold (1911). Harmonielehre
Vienna: Universal Edition.
Analyzed stepwise voice leading and common tones in third and fifth relationships across the diatonic cycle.
Cited in. circle readings
Leavitt, William (1966). A Modern Method for Guitar
Boston: Berklee Press.
Systematized left-hand finger transitions and cyclic diatonic progressions for the modern guitar fretboard.
Reference work. No reading names it.