3647 / 18210 · Workshop 18 — “Have You Met Miss Jones?”: Sudden Key Centers, Major-Third Modulations, and Staying Oriented When Harmony Jumps← prev⊞ allnext →
18.49Level 20 — tritone substitution only after map is secure
Example:
C7 → F
can become:
G♭7 → F.
But if the tune already jumps rapidly among remote tonal centers, substitutions can obscure the map.
Use later, not during initial learning.