$19.99 Harmonic and Melodic Equivalence V10C Two Trichords quantity Add to cart Categories: Guitarists, Bass Guitarists, Ear Training, Time Studies, Instrumentalists Description Description Digital Downloads are Non-Refundable Related products More Info on the One Minute Lesson Bundle $49.99 Add to cart One Minute Lesson Phrasing $24.99 Add to cart One Minute Lesson Harmony $24.99 Add to cart Pitch Class Set Theory Course Bundle $39.99 Add to cart