The Psychology of Music: How Song Lyrics Affect Our Minds
Words as the code to a melody.
Music affects not just our mood, but the physiological and cognitive processes in our bodies too. Through emotional association, a piece of music can help a person release distress, or sometimes draw them deeper inward, after which things feel lighter.
Song lyrics also play their part. They add to music's effect, creating new associations and meanings that intertwine with the listener's personal experience.
Manipulations like these create a deeper, more individual connection to a piece, which shapes how we feel about it. How this works — read on in this DeTalks article.
Does Language Matter
A melody can trigger basic feelings of joy, sadness, tension, or calm, but it's the lyrics that give it specific meaning and direction. Researchers at Pompeu Fabra University tested how understanding song lyrics affects emotional perception.
The experiment involved 200 participants who were native speakers of English, Spanish, German, and Chinese. Participants listened to clips of popular songs in different languages and were asked to describe exactly what they felt.
When people didn't understand the words, they perceived the song mainly through melody, rhythm, and vocals, paying the most attention to musical elements. In cases like this, participants felt universal emotions — joy or sadness, for instance — but more complex feelings, like tenderness, nostalgia, or elation, came through more weakly. Those who understood the lyrics, by contrast, gave more precise and nuanced assessments.
It's exactly this understanding of the words that helps listeners form a more personal, meaningful reaction to a song. This explains why people often choose music in their native language, or a language they understand.
How Music Is Studied
Analyzing music and emotion might seem complicated, but it's actually fairly logical. The experiment 'Lyrics, Music, and Emotions', for instance, breaks the whole process down step by step.
In it, a team of researchers gathered about a hundred songs from the CAL500 database (Corpus for Music Emotion Recognition), including titles like 'Dancing Queen' (ABBA), 'Hotel California' (Eagles), and 'Let it Be' (The Beatles). The study's goal was to determine exactly how music and lyrics, separately and together, affect our emotions.
To do this, scientists built a computer model that 'broke down' songs into two parts: the musical component (via MIDI files — digital versions of melodies that capture notes, rhythm, and tempo) and the lyrical component. The program analyzed which emotions each part triggered — joy, sadness, fear, anger, disgust, or surprise.
To gather human input, researchers also recruited participants through the Amazon Mechanical Turk platform — ten people rated each song on how strongly it conveyed a given emotion, on a scale of 0 to 10.
In 'A Hard Day's Night' (The Beatles), for instance, the opening lines about a difficult day and working hard tended to trigger sadness more often than joy.
It turned out that both melody and lyrics carry their own influence, but real depth emerges when they work together. Combining lyrics and music, in particular, boosts emotion-recognition accuracy by 31%.
One Study, Different Results
But claims about music's dominance over lyrics haven't always agreed. Back in 2006, for instance, psychologists Ali and Peynircioglu000glu explored exactly what makes us feel emotion from songs — the melody or the words.
They ran an experiment in which participants listened to song excerpts in different formats: music only, lyrics only, or the full version with vocals. The result: melody won out. It's what triggered the strongest emotions in listeners, while the lyrics seemed like just an additional 'explanation' for the piece. A song could sound happy or sad even without a single word.
Over time, though, this claim started getting reexamined. In a newer study, 'Lyrics and Melodies: Do Both Affect Emotions Equally?', psychology professors decided to repeat the experiment. They tested how the presence or absence of lyrics in songs affects the emotional perception of music. 104 participants listened to excerpts of 'happy,' 'sad,' 'calm,' and 'angry' songs in two versions — with and without lyrics. They then rated how strongly each excerpt conveyed a given feeling.
On top of that, researchers also accounted for participants' level of musical training, measured using the Gold-MSI scale. The results were the opposite this time. This time, it was the lyrics that boosted emotional perception — especially among those who respond sensitively to music, even without any formal musical training.
Lyrics and Their Effect on the Mind
Music comes in many forms — from calm ballads to aggressive heavy metal. People may not even notice how their preferences partly shape their conscious behavior or decisions. Psychologists John Mast and Francis McAndrew of Knox College tested whether song lyrics can influence human behavior.
In the study, 35 male students were randomly split into three groups. One group listened to heavy metal music with violent lyrics (like 'Bloodmeat' and 'Limb from Limb' by Protest the Hero), another listened to heavy metal without violent themes ('Bounce,' 'Old School Hollywood' by System of a Down), and the third listened to nothing at all.
After listening, participants took a test: they added as much hot sauce as they thought appropriate to water supposedly meant for another participant to drink. The amount of hot sauce added served as a measure of aggression. As a result, those who'd listened to music with violent lyrics added significantly more hot sauce than the other groups — even though the second group had listened to the same genre, just with different lyrics.
Lyrics Playing With the Subconscious
Music can reach deeper than it seems — sometimes into the territory of our unconscious desires. A person might not notice how a certain idea just 'surfaces' in their mind after a favorite song. Sometimes that's not a coincidence, but a subtle psychological effect.
Professors at Radboud University studied whether mentions of alcohol in song lyrics could influence actual alcohol consumption in bars. To test this, three venues in Nijmegen, the Netherlands, randomly played two types of playlists over 46 evenings. One included songs with direct references to alcohol, and the other featured tracks by the same artists without such references, but with similar rhythm and tempo.
On evenings when music with 'alcohol' lyrics played, drink sales revenue was significantly higher — by an average of 18 euros per evening.
The experiment's authors explained this through the priming effect, in which certain words activate related associations and gently nudge a person toward a specific action.
So experiments confirm that how we perceive music depends heavily on the verbal content of a piece. Human psychology will always be inclined to seek echoes of its own states in melody and lyrics.