In an 1899 treatise written while in exile, Vladimir Lenin critiqued the capitalist growth of Russian industries in which factory workers had replaced skilled craftsmen. Among his concerns was a shift toward the mass production of cheap accordions, which, he complained, “have nearly everywhere displaced the primitive string folk instrument, the balalaika.”

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.

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.

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.”