
Learn how to write a medieval-style modal theme using G Aeolian and G Dorian, with practical harmony and melody tips.
This lesson demonstrates composing a modal video-game theme by alternating G Aeolian (Aolian) and G Dorian, showing how small scale changes affect harmony and color. It covers diatonic chord choices, which chords to use as cadential and passing harmonies, why to avoid the ii° in Aeolian, and melodic guidance such as avoiding the flat-6 in Aeolian. You’ll also see arrangement tips—modal interchange using a borrowed V, switching modes for B sections, modulating back to the original mode, and finishing with a Picardy third—plus orchestration suggestions for a medieval sound.
