So in this project we asked, “What is universal about music, and what varies?” This is a deep question in the study of humanity. They do very different things with features that are almost the opposite of each other.” “For me, dance songs and lullabies tend to define the space of what music can be. “Lullabies and dance songs are ubiquitous, and they are also highly stereotyped,” Singh said. Examining lullabies, healing songs, dance songs, and love songs in particular, they discovered that songs that share behavioral functions tend to have similar musical features. They found that, across societies, music is associated with behaviors such as infant care, healing, dance, and love (among many others, like mourning, warfare, processions, and ritual). The discography was analyzed four different ways: machine summaries, listener ratings, expert annotations, expert transcriptions. They logged details about singers and audience members, the time of day and duration of singing, the presence of instruments, and more for thousands of passages about songs in the ethnographic corpus. The team and their researchers coded the ethnography and discography that makes up the Natural History of Song into dozens of variables. Published in Science this week, it represents the team’s most ambitious study yet about music. Their questions were so compelling that the project rapidly grew into a major international collaboration with musicians, data scientists, psychologists, linguists, and political scientists. Mehr, Singh, and Glowacki call this database The Natural History of Song. Mehr added those reel tapes to the team’s growing discography, combining it with a corpus of ethnography containing nearly 5,000 descriptions of songs from 60 human societies. Twenty minutes later this poor librarian comes out with a cart of about 20 cases of reel-to-reel recordings of Celtic music.” At one point, we were looking for traditional Celtic music and we found a call number in the library system and librarian told us we needed to wait on the other side of the library because there was more room over there. “But there are thousands and thousands of recordings buried in archives. “We are so used to being able to find any piece of music that we like on the internet,” said Mehr, who is now a principal investigator at Harvard’s Music Lab. Over a five-year period, the team hunted down hundreds of recordings in libraries and private collections of scientists half a world away. They set out to address big questions: Is music a cultural universal? If that’s a given, which musical qualities overlap across disparate societies? If it isn’t, why does it seem so ubiquitous? But they needed a data set of unprecedented breadth and depth. The study was conceived by Samuel Mehr, a fellow of the Harvard Data Science Initiative and research associate in psychology, Manvir Singh, a graduate student in the Department of Human Evolutionary Biology, and Luke Glowacki, formerly a Harvard graduate student and now a professor of anthropology at Pennsylvania State University. Henry Wadsworth Longfellow wrote, “Music is the universal language of mankind.” Scientists at Harvard have just published the most comprehensive scientific study to date on music as a cultural product, which supports the American poet’s pronouncement and examines what features of song tend to be shared across societies.
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