1. Harry Styles wrote "Falling" in just a shower towel with Fine Line songwriter and producer Thomas Hull, aka Kid Harpoon, in only 20 minutes.

Listen to the song here:
View this video on YouTube
2. Stevie Nicks wrote "Landslide" about her difficult breakup with Lindsey Buckingham in 1974 just before they joined Fleetwood Mac.

Listen to the song here:
View this video on YouTube
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.

Listen to the song here:
View this video on YouTube
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.

Listen to the song here:
View this video on YouTube
5. Dolly Parton used her acrylic nails to write "9 to 5" because she believed they sounded like a typewriter.

Listen to the song here:
View this video on YouTube
6. Lil Nas X wrote "Old Town Road" for his Twitter followers during his first year of college instead of retaking a math class.

Listen to the song here:
View this video on YouTube
7. When John Legend first played the wedding classic "All of Me" for his then-fiancé, Chrissy Teigen, she cried.

Listen to the song here:
View this video on YouTube
8. Billie Eilish wrote "Bellyache" from the perspective of a serial killer.

Listen to the song here:
View this video on YouTube
9. Taylor Swift was inspired to write "Death by a Thousand Cuts" after watching the Netflix rom-com Someone Great.

Listen to the song here:
View this video on YouTube
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.

Listen to the song here:
View this video on YouTube
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.

Listen to the song here:
View this video on YouTube
12. Frank Ocean wrote "Novacane" about the numbness you experience when you don't love someone you're in a relationship with.

Listen to the song here:
View this video on YouTube
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.

Listen to the song here:
View this video on YouTube
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.

Listen to the song here:
View this video on YouTube
15. Cyndi Lauper's hit "She Bop" is actually about masturbation, and she read lifestyle and entertainment magazines like Blueboy for lyric inspiration.
