Why Songs Get Stuck in Your Head
An earworm is a short phrase your brain keeps replaying because it never finished. The shapes that do this share a few features, and most of them can be heard in a few seconds. The research behind the popular claims is thinner than the headlines suggest, so we mark what is solid.
- short
- repetitive
- unresolved
Where you run into this
- Pop
- Advertising
- Songwriting
- Memory research
In short
The common thread is incompleteness. A phrase that ends on an unresolved note leaves a prediction open, and open predictions get rehearsed. Add repetition, a small range that is easy to sing, and one unexpected leap that makes it distinctive, and you have the standard earworm recipe. Individually these are well established; the exact combination is mostly survey work with modest sample sizes.
Hearing a loop stop one note early is genuinely uncomfortable, and completing it out loud does actually help. That is the one piece of practical advice here that holds up.
How it works
The same features that make a phrase stick make a good hook. Songwriters have been using the mechanism for a century; the research mostly caught up and gave it names.
Where you run into this
- A chorus you cannot stop singing that is only four notes long
- An advert jingle that ends on a note that does not resolve
- A riff that repeats just often enough to be learned without being heard
Our own examples
Three of our own loops: one that resolves and stops bothering you, one that does not, and the same shape with a leap added so you can hear what makes a phrase memorable rather than merely repetitive.
Keep going
Everything in sound and hearing
- Pitch Perception
- Psychoacoustics
- Consonance and Dissonance
- Music and Emotion
- Why Songs Get Stuck in Your Head