Applying Theory to Songwriting

A hook is simply the moment a song deliberately maximizes memorability — usually the point of greatest release after the most tension, which is exactly why choruses are where hooks live most often: the verse builds harmonic and lyrical tension (often sitting on predominant or unresolved harmony, or a melody that avoids landing on the tonic), and the chorus resolves it, both harmonically (a strong cadence or a return to I) and melodically (landing squarely on stable scale degrees).

Repetition is not the enemy of interest — it's what lets a listener recognize a hook as a hook. The craft is in repetition with a controlled amount of variation: repeat a phrase exactly once so it registers, then vary the harmony, the instrumentation, or the ending on the next pass so it doesn't go stale. A chorus that repeats verbatim every time relies entirely on the material itself being strong; small variations (a new backing harmony, an added vocal ad-lib, a key change on the last repeat) are a cheap, reliable way to sustain interest without changing the core hook.

Harmonic rhythm — how often the chord changes — is an independent tension lever from which chords you choose. A verse that changes chords slowly (one per measure or slower) feels patient and sets up contrast; a chorus that changes chords twice as often feels more urgent even using the exact same chords, purely from the increased rate of harmonic motion. Speeding up harmonic rhythm right before a chorus is one of the most common, least noticed ways pop production builds a sense of lift.

Put simply: decide what your listener should expect at each moment, then choose whether to deliver on that expectation immediately, delay it, or subvert it. Every tool in this course — a suspension, a secondary dominant, a borrowed chord, a deceptive cadence, a change in harmonic rhythm — is a way of executing exactly that decision.