Great article series!
Even if most (serious) musicians learn these things pretty early on, either through school or self-experimentation, it's a great read for someone just starting out, and even for game designers in other departments in order to create a cohesive game experience.
When it comes to conveying / asserting a certain feeling there really isn't anything that trumphs a good musical score. Even a lack of music (where you normally would expect some) can have a powerful effect, given the right situation.
Some suggestions for a possible addendum/part 2 of this Chords article, or perhaps even a whole new article subject in itself.
How to make your pieces musically interesting through contrasting parts:
- Parts with varied chord progressions (for example low movement monotonous verse progression into high movement w/ added progression complexity chorus)
- Varying the tone (for example going from minor verse to major chorus)
- Varied chord inversion (for example low movement inversion chord progression verse into a high movement inversion chord progression chorus)
Obviously contrasting tempo, rhythm, melody, velocity (volume) etc. come into play aswell, but if you're going to restrict it to the subject of chords these "techniques" are good to have in the back of your head when composing.
Anyhow, as I mentioned previously, great articles. Thoroughly explained and put in words I can see people new to composing music would understand.
Looking forward to reading more stuff by you guys.