Hoping to encourage hostages held by FARC during Colombia’s civil war, state negotiators commissioned a local producer in 2010 to create a pop song embedded with a Morse-code message and had it broadcast repeatedly on the radio in rebel-controlled areas. After the lyrics “Listen to this message, brother,” the code sounded as a synth interlude: “Nineteen people rescued. You are next. Don’t lose hope.”

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.

Born on Lesbos around 700 BC, Terpander, a master of the kithara, was summoned to Sparta during a period of civil strife—an oracle had suggested bringing the “Lesbian singer” to help—and organized the city-state’s earliest civic music culture. Immensely popular there, he later returned for what was to be his last performance. While he was playing, a fig thrown by an adoring fan went directly into his mouth. Terpander choked on the fruit and died.

In 2009 a twenty-four-year-old policewoman in Long Branch, New Jersey, responded to complaints about an “eccentric-looking old man” peering into a house. She asked the man his name. “I’m Bob Dylan,” he said. “I’m on tour.” Taking him for a liar, she put him in the back of her car and drove him to his hotel, where others confirmed he really was the musician. “I think he named a couple of songs,” she later recalled. “But I wouldn’t have known any of the songs.”