"Irreplaceable" wasn't specifically penned for Beyonce - in fact, Ne-Yo wrote it more as a country song and had Faith Hill and Shania Twain in mind.
Alicia Keys wrote "If I Ain't Got You" just after she'd heard the news that Aaliyah had passed away. in a plane crash.
Jimmy Webb was inspired to write "Up-Up and Away" by a balloon that his friend William F. Williams flew on promotions for radio station KMEN.
Lily Allen wrote "Something's Not Right" for the soundtrack of the Peter Pan prequel, Pan. The song was inspired by the heartache that Allen experienced after suffering a miscarriage when she was six months pregnant with her first child by husband Sam Cooper in 2010.
After Gwen Stefani and Gavin Rossdale hooked up in 1996, Rossdale's Bush bandmates referred to their hit song as "Everything Gwen."
In her days with The Runaways, Joan Jett saw The Arrows perform "I Love Rock And Roll," which Alan Merrill co-wrote - that story and much more from this glam rock pioneer.
Rickie Lee Jones on songwriting, social media, and how she's handling Trump.
One of the first successful female singer-songwriters, Janis had her first hit in 1967 at age 15.
Inspired by his dear friend, "Seasons in the Sun" paid for Terry's boat, which led him away from music and into a battle with Canadian paper mills.
At 80 years old, Yoko has 10 #1 Dance hits. She discusses some of her songs and explains what inspired John Lennon's return to music in 1980.
Iron Maiden, Adele, Toto, Eminem and Earth, Wind & Fire are just some of the artists with songs directly inspired by movies - and not always good ones.
