Starting off here with an article that might not be about music proper, but it is about sounds and perception. Some people are hyperperceptive, some dull as a rock - anesthetic you could call it. Everyone else just thinks their house is haunted.
You can't hear it, yet this sound may explain paranormal experiences
Apr 2026, phys.org
Infrasound is very low-frequency sound, below 20 Hertz (Hz), which humans typically can't hear. It can come from natural sources like storms, or from anthropogenic sources like traffic.
The scientists recruited 36 participants and invited them to sit alone in a room while either calming or unsettling music was played. For half the participants, hidden subwoofers played infrasound at 18 Hz. After listening, they were asked to report their feelings, their emotional rating of the music, and whether they thought the infrasound was present. They also gave saliva samples before and after listening.
The scientists found that participants' salivary cortisol levels were higher if they had been listening to infrasound. These participants also reported feeling more irritable and less interested, and thinking the music was sadder. But they couldn't tell they were listening to infrasound.
via MacEwan University: Infrasound Exposure is Linked to Aversive Responding, Negative Appraisal, and Elevated Salivary Cortisol in Humans, Frontiers in Behavioral Neuroscience (2026). DOI: 10.3389/fnbeh.2026.1729876
Image credit: Photographer Christopher Payne - Jelly Belly Fairfield CA - 2021
Popular song lyrics have become more negative since 1973, analysis reveals
Dec 2025, phys.org
Researchers analyzed the lyrics of the top 100 most popular English-language songs in the United States each week between 1973 and 2023 (20,186 songs), according to the Billboard Hot 100 chart. The authors found that, in general, the lyrics of popular songs have become simpler and more negative over time and contain more stress-related words.
However, they also found that the popularity of songs with more complex lyrics began to increase from 2016 onward and suggest that further research is needed to investigate the reasons for this.
When assessing potential factors influencing changes in listener lyric preferences, the authors did not identify associations with changes in median household income since 1973, but did identify some associations with major stressful events — such as the September 11, 2001, attacks and the onset of the COVID-19 pandemic.
These events were associated with lyrics becoming more complex and positive and containing fewer stress-related words, or with no significant changes in lyrics. The authors suggest that this could be due to more positive and complex music being used as a form of escapism during stressful periods.
via University of Vienna: Maurício Martins, Societal crises disrupt long-term increases in stress, negativity, and simplicity in US Billboard song lyrics from 1973 to 2023, Scientific Reports (2025). DOI: 10.1038/s41598-025-28327-5.
Why some tunes stick: Mathematical symmetry helps explain catchy melodies
Feb 2026, phys.org
They simplified melodies into their essential note groups and examined how common musical changes affect 2 kinds structure - tonal and positional structure. These changes include transposition, which shifts a melody up or down; inversion, which flips it; retrograde, which reverses it; and translation, which moves it through time.
Their analysis revealed symmetrical relationships in many melodies that help explain why certain musical phrases feel cohesive and complete.
via University of Waterloo: Olga Ibragimova et al, Algebraic Applications in Investigation of Musical Symmetry, Springer Proceedings in Mathematics & Statistics (2025). DOI: 10.1007/978-3-031-84869-8_5
From virtue to vice: How the morality of popular music lyrics has changed since the 1960s
Jun 2026, phys.org
The study examined two large popular music data sets spanning more than 60 years, making it the first study to chart moral content in song lyrics at this scale: more than 377,000 English-language songs covering 1960 to 2010 were filtered from the WASABI data set and complemented with 5,500 songs that made Billboard's year-end charts between 1960 and 2023.
Their analysis revealed a rise in expressions associated with moral vices such as harm, cheating, subversion and degradation, alongside increasing levels of negative sentiment, anger and disgust. At the same time, expressions linked to moral virtues such as care and decency became less prominent.
via Queen Mary University of London Center for Digital Music: Vjosa Preniqi et al, Evolution of moral expression in song lyrics, Scientific Reports (2026). DOI: 10.1038/s41598-026-53778-9
Pop song lyrics grew more self-focused in the US and Germany over 50 years, research reveals
Jun 2026, phys.org
Researchers have examined the possibility that global society may be becoming more self-centric by measuring how often different pronouns appear in cultural products such as books, movie scripts and lyrics. Compared with first-person plural pronouns, such as "we" and "us," a higher proportion of first-person singular pronouns, such as "I" and "me," can indicate greater self-focus.
They found that self-focused language rose significantly between 1970 and 2019 in the U.S. and Germany—two more individualistic countries. Meanwhile, the use of self-focused language was relatively stable over time in the two more collectivist countries, Japan and Hong Kong.
via United Arab Emirates University and U of Aberdeen Scotland: Golubickis M, et al. Are societies becoming more self-centric? Evidence from five decades of popular music spanning three continents, PLOS One (2026). DOI: 10.1371/journal.pone.0349765
*We are not a fan of academic collaborations with the UAE, because they're buying themselves a culture instead of growing it the old fashioned way, and we are old fashioned.
