3.While recording "Partition" in the studio, Beyoncé didn't come prepared with any lyrics — she completely ad-libbed the song as soon as she heard the bass line and beat.
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4.When John Lennon divorced his first wife in the late '60s, Paul McCartney wrote "Hey Jude" for Lennon's son, Julian, to make him feel better.
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5.Dolly Parton used her acrylic nails to write "9 to 5" because she believed they sounded like a typewriter.
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6.Lil Nas X wrote "Old Town Road" for his Twitter followers during his first year of college instead of retaking a math class.
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7.When John Legend first played the wedding classic "All of Me" for his then-fiancé, Chrissy Teigen, she cried.
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8.Billie Eilish wrote "Bellyache" from the perspective of a serial killer.
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9.Taylor Swift was inspired to write "Death by a Thousand Cuts" after watching the Netflix rom-com Someone Great.
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10.Donald Glover said that "This Is America" is a song for the people, and it's up to them to interpret what it's really about.
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11.Alicia Keys wrote "If I Ain't Got You" on a plane immediately after she found out that Aaliyah had died in a plane crash.
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12.Frank Ocean wrote "Novacane" about the numbness you experience when you don't love someone you're in a relationship with.
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13.Lady Gaga actually wrote "Shallow" as the ending song of A Star Is Born because in the original script, Bradley Cooper's character drowned.
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14.Jimi Hendrix completely made up "Voodoo Child (Slight Return)" on the spot while someone was filming the Jimi Hendrix Experience recording music in the studio.
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15.Cyndi Lauper's hit "She Bop" is actually about masturbation, and she read lifestyle and entertainment magazines like Blueboy for lyric inspiration.
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16.And "Ms. Jackson" by Outkast was André 3000's apology to Erykah Badu's mom for the breakup between the two hip-hop artists.