Most of us already know music can bring old memories flooding back. A song from a particular summer, a wedding dance, a tune that played on a long drive: hear a few bars decades later and the moment returns almost whole. But a more interesting question is whether music can shape memories as they’re being formed in the first place, while they’re still fresh and unsettled.

The forgotten window right after learning

A 2025 study from Rice University, led by graduate student Kayla Clark and adjunct professor Stephanie Leal, looked specifically at what neuroscientists call the post-encoding period: the short stretch right after you learn something, when the brain is quietly working to lock that information into long-term storage. Most memory research focuses on what happens while we’re learning. Clark and Leal wanted to know what happens in the silence afterward, and whether music playing during that silence changes anything.

Their setup, published in the Journal of Neuroscience, was simple. Participants viewed a series of everyday images, then were randomly assigned to one of three groups for a 20-minute rest period: one group listened to classical music, another listened to ambient soundscapes, and a third sat in silence. After the rest, everyone was tested on what they remembered, both the general gist of what they’d seen and the finer details.

It’s not the music. It’s how the music made you feel

The results revealed something more nuanced than “music helps memory.” People who experienced a moderate level of emotional arousal while listening, not too calm, not too intense, remembered specific details better. Those who felt very strongly aroused or barely aroused at all tended to retain only the broad outline of what they’d seen, missing the finer details.

“Moderate levels of emotional arousal predicted better memory for details, like specific features in an image,” Clark said. “People with either very high or very low arousal were more likely to remember the gist.”

This pattern lines up with the Yerkes-Dodson Law, a long-standing idea in psychology that performance tends to peak at moderate arousal and drop off at the extremes. The twist Clark and Leal added is that different kinds of memory, the gist versus the fine detail, may each have their own sweet spot of emotional intensity.

Even more telling: the exact same piece of music left different listeners in completely different emotional states. Some found a track calming, others found it energizing. It was each person’s individual emotional response, not the music itself, that predicted how their memories were stored.

Songs as time machines

This new work on memory formation pairs with a separate strand of research on memory retrieval. A 2025 study from the University of Jyväskylä in Finland, drawing on nearly 2,000 participants across 84 countries, confirmed that music from adolescence, especially around age 17, tends to hold the most lasting emotional significance throughout life, a pattern researchers call the “reminiscence bump.” Songs act as temporal landmarks, anchoring us to specific periods and people, which is part of why a single melody can summon an entire scene rather than just a feeling.

Separately, researchers at UCLA found in 2025 that listening to music after an experience only improved memory for people who felt a moderate emotional response while listening, echoing the Rice findings from an independent angle.

Why this matters beyond curiosity

Both research teams see real clinical potential here. If the right music, matched to the right person’s emotional response, can be used deliberately during that post-learning window, it could become a low-cost, noninvasive tool to support people with memory impairments, including those with Alzheimer’s disease or depression.

“If we can figure out how to match the right kind of music to the right individual at the right time,” said Leal, “it opens up exciting possibilities for supporting people with memory impairments.”

Clark is now expanding the research to include adults of all ages, and plans to add physiological measures like heart rate and pupil dilation to better understand exactly how music-induced arousal shapes what we remember.

Sources

  • Clark, K., & Leal, S. (2025). Post-encoding emotional arousal and memory. Journal of Neuroscience. Rice University.
  • Burunat, I., et al. (2025). Memory bumps across the lifespan in personally meaningful music. Memory.
  • UCLA Newsroom (2025). How music-induced emotional arousal impacts forms of memory.