A familiar song can reach someone with dementia in a way that everyday conversation no longer does. A favorite melody may spark a flicker of recognition, stir emotion, prompt a gentle sway, or even unlock memories that otherwise feel out of reach. New research on music, Alzheimer’s disease, and frontotemporal dementia suggests that these moments of connection are real, but that different types of dementia do not respond to music in the same way. Understanding those differences may help caregivers and clinicians use music therapy with more care and precision.

In a 2026 brain imaging study published in Brain Communications, researchers at the Alzheimer Center Amsterdam and the Netherlands Institute for Neuroscience explored how personally meaningful music affects the brain. They recruited people with Alzheimer’s disease, people with behavioral variant frontotemporal dementia (often called FTD), and healthy adults, then used fMRI to measure their brain activity. Each participant listened to music that held personal significance and to unfamiliar, neutral music. Across all three groups, favorite music produced stronger brain responses than the neutral selections, which suggests that even a brain affected by dementia can still tell the difference between a song that matters and one that does not.

To understand why that finding is important, it helps to look at how Alzheimer’s and frontotemporal dementia affect the brain in different ways. Many people think of dementia primarily as memory loss. That description fits Alzheimer’s disease more closely, where early damage centers on the hippocampus, the brain’s key structure for forming new memories. Behavioral variant FTD looks very different. In this form of dementia, nerve cells in the frontal and temporal lobes steadily decline. Those regions are heavily involved in personality, social behavior, language, and movement. As a result, FTD often begins with changes in personality, impulsive actions, or a striking loss of empathy rather than obvious forgetfulness.

This difference in early symptoms reflects a deeper reality. Alzheimer’s and behavioral variant FTD are not different stages of a single illness. They are distinct neurodegenerative diseases that target different brain systems. Alzheimer’s typically appears in a person’s mid 60s or later. FTD often emerges earlier, most commonly between ages 40 and 60, and is considered the most common dementia for people under 60, affecting an estimated 50,000 to 60,000 Americans. Because it often presents first as a change in behavior, FTD is sometimes mistaken for a psychiatric condition. Yet it is rooted in structural changes to the frontal and temporal lobes, which has consequences for how a person relates to the world, including how they respond to music.

The Amsterdam study suggests that favorite music can still reach the brain across these diagnoses, although not in identical ways. By asking participants to choose songs that truly mattered to them, the researchers focused on the power of personal meaning rather than generic music exposure. Personally significant music activated key brain networks more strongly than unfamiliar music in healthy adults, people with Alzheimer’s, and people with FTD. That pattern alone reinforces what many caregivers observe. Even in the presence of serious cognitive decline, a beloved song can produce a visible shift in engagement, posture, or expression.

At the same time, the study found noteworthy differences between Alzheimer’s and behavioral variant frontotemporal dementia. People with FTD showed less activation than both the Alzheimer’s group and the healthy controls during their favorite music. The reduced activity included a region that plays an important role in musical memory, suggesting that some of the neural systems that support music processing may be compromised earlier in FTD than in Alzheimer’s.

One of the most striking findings is how well preserved some aspects of music processing appear to be in Alzheimer’s disease. Researchers distinguish between episodic memory, which holds specific life events such as when and where you first heard a song, and musical semantic memory, which refers to stored knowledge about music. Musical semantic memory includes recognizing a familiar melody, identifying a song’s emotional tone, or linking it to a particular genre or era. The study highlights that this musical knowledge tends to remain accessible in many people with Alzheimer’s, at least in the earlier and middle stages, because the brain areas that support it are not the first to be damaged.

By contrast, the frontal and temporal regions that help store and organize musical semantic memory are among the early targets in behavioral variant FTD. If those networks deteriorate, the person may have more difficulty experiencing music as meaningful or emotionally rich, even if hearing and basic rhythm perception remain intact. This difference may help explain why some individuals with Alzheimer’s respond robustly to playlists from their past, while others with FTD appear more muted or indifferent.

The study also draws attention to a particular brain region that seems especially affected in FTD. During music listening, people with behavioral variant FTD showed less activity in the supplementary motor area. Located near the top and center of the brain, the supplementary motor area is involved in planning and coordinating movement, but its role extends further. It contributes to internal timing and anticipation, including the sense of a musical beat and the emotional motor response that makes people tap their feet or nod along to a rhythm. Reduced activation in this area may help explain why some caregivers notice that a loved one with FTD no longer moves to music or appears emotionally attuned to it in the way they once did.

These findings carry practical implications for dementia care, while also underscoring the limits of one size fits all approaches. Previous work has found that music therapy for people with dementia can improve memory and verbal fluency, reduce anxiety and apathy, and provide short term boosts in quality of life. The new fMRI results do not claim that music therapy is universally effective in Alzheimer’s or ineffective in FTD. Instead, they suggest that the underlying disease process influences how the brain responds to music and that music based interventions may need to be tailored to the type of dementia and to the individual.

One detail stands out as especially actionable for families and caregivers. The research protocol prioritized songs that were personally meaningful rather than relaxing background music or tracks randomly selected for a particular age group. Studies using personalized music selections have found that preferred playlists can help reduce agitation and other behavioral symptoms in people living with dementia. The Amsterdam findings support the notion that personal significance is not just a sentimental extra. It has measurable consequences in the brain.

In practical terms, this means that building a playlist for someone with dementia should start with their own musical history. That might include artists they loved in adolescence, songs tied to important life events, or melodies associated with family traditions and celebrations. When a person can no longer describe their preferences clearly, relatives and longtime friends may be the best guides. Generic “calm music” or a caregiver’s favorite songs may be better than silence, but they are unlikely to match the impact of deeply familiar tunes with real emotional weight. Responses may also be subtle. Not everyone will sing along or dance. A small change in facial expression, a relaxed posture, a slight movement to the beat, or a moment of attentive listening can all indicate that the music is reaching them.

Ultimately, this research highlights how resilient our relationship with music can be. Dementia reshapes memory, behavior, and personality in profound ways, yet the capacity to respond to meaningful sounds often lingers. For people with Alzheimer’s disease, that capacity may remain especially strong, even as other mental abilities weaken. For those with behavioral variant frontotemporal dementia, changes in key brain networks can alter the way music is experienced, but personal meaning can still matter. As families, clinicians, and care communities continue to explore the role of music therapy in dementia care, distinguishing between different types of dementia and centering each person’s unique musical story may help keep that connection alive.

Read more at https://theheartysoul.com/music-therapy-dementia/