Beware a comet “if it resembles a flute,” Pliny the Elder warned; “it portends something unfavorable related to music.” The Roman author did not offer further particulars.

In 2014 Amelia Hamrick, an undergraduate at Oklahoma Christian University, noticed musical notes written across the buttocks of one of the denizens of hell depicted in Hieronymus Bosch’s painting The Garden of Earthly Delights. She transcribed it into modern notation and made a recording she posted on her blog. “So yes,” she wrote, “this is literally the 600-year-old butt song from hell.” The post went viral.

Humpback whales, which have a sonic range of at least seven octaves, create songs between the length of a modern ballad and a symphony movement, possibly because their attention span is similar to that of humans. Their tunes also contain repeated refrains that form melodic rhymes, suggesting that, like humans, they use these as mnemonic devices.

Irving Berlin composed most of his songs in F-sharp major; the six sharp notes in the scale meant he could play the black keys of the piano almost exclusively. Eventually, for purposes of technical variety, he had a lever mechanism installed that allowed him to modulate into other keys without changing his playing.

In her journal about life as a lady-in-waiting at Heian court, Sei Shonagon expresses her delight in men who keep a transverse flute tucked away in the breast of their robes. “There really is nothing more marvelous,” she writes. “And it’s delightful to discover beside your pillow at daybreak the handsome flute that your lover has inadvertently left behind him.”

Michel de Montaigne’s father believed “it disorders the tender brains of children to awake them by surprise in the morning, and suddenly and violently to snatch them from sleep”; he preferred to rouse his son from slumber “by the sound of some instrument of music,” likely an early form of harpsichord called an epinette. Montaigne recalled later that he “was never without a musician for that purpose.”

According to his official North Korean biography, Kim Jong Il initiated “an epochal change in the history of the modern opera” by introducing an offstage song called a pangchang—an innovation, claims the bio, “greater than the discovery of the heliocentric theory by Nicolaus Copernicus or the discovery of the New World by Christopher Columbus.”

“Please send me something I can set to music, only don’t make it the history of the world, the Thirty Years’ War, the era of the popes, or the island of Australia,” wrote Fanny Hensel to her brother Felix Mendelssohn in 1834. “Instead, find me something really useful and solid.”