it was a minor four
the song was in a major key. everything was where it was supposed to be. and then, in the second verse, the chord that should have been a major four went minor. just that one chord. everything else stayed the same.
i'd heard the song dozens of times before i noticed it. and then i noticed it and i couldn't unhear it. the minor four is the thing the song is about. not the lyrics. not the melody. that one chord change.
it's a borrowed chord — borrowed from the parallel minor key. it's been used in songs for a hundred years. it's not unusual. but in this particular song, in this particular moment, it does something specific. it introduces a shadow into a song that's otherwise in the light. it says: this happiness is aware of its own fragility.
what a chord can carry
there's a kind of emotional information that only harmony can carry. lyrics can say "i'm happy but i know it won't last." a chord change can make you feel that without saying it. the feeling arrives before the understanding. you feel the shadow before you know why.
this is why music theory is worth knowing even if you never use it consciously. not because you'll think "ah, a minor four" while you're writing — you won't, or you shouldn't — but because understanding why something works gives you access to it. you can reach for it when you need it.
the Calitoy blog has been thinking about the gap between understanding and intuition in creative work — the way knowledge becomes instinct over time. this is that. and End of 8 has been exploring the emotional weight of specific harmonic choices in loop-based music, which is a related angle.
the songs that taught me
i've been keeping a list of chord changes that changed how i hear music. the minor four is on it. so is the deceptive cadence — the moment when the chord you expect doesn't arrive and something else does. so is the flat seven, which sounds like a door opening into a different room.
these aren't tricks. they're tools. and the difference between a trick and a tool is whether you understand what it's doing. a trick is something you use because it works. a tool is something you use because you know why it works, which means you know when not to use it.
the song with the minor four uses it once. just once. that's why it works. if it happened every chorus, it would stop being a shadow and become the light. the restraint is the thing.
more on the craft of songwriting at josephcalitoy.com.