Paul McCartney wrote "Hey Jude" to comfort John Lennon's 5-year-old son Julian, whose parents were getting a divorce.
"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.
When "Turn On The Radio" topped the January 1, 2011 country chart, Reba McEntire became the first female solo act to have a #1 hit in four straight decades.
The Jesus Jones song "Right Here, Right Now" was conceived as an optimistic version of Prince's "Sign O' The Times."
Running 7:58, Meat Loaf's "I'd Do Anything For Love (But I Won't Do That)" is the longest-ever #1 hit.
Bob Marley gave the songwriting credit for "No Woman No Cry" to his friend Vincent Ford, who ran a soup kitchen in Trenchtown, the area of Kingston where Marley grew up.
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.
Yngwie Malmsteen and Steve Vai were two of Graham's co-writers for some '80s rock classics.
Billy Joel and Hall & Oates hated making videos, so they chose a director with similar contempt for the medium. That was Jay Dubin, and he has a lot to say on the subject.
With Bernie Taupin, Martin co-wrote the #1 hits "We Built This City" and "These Dreams." After writing the Pretty Woman song for Go West, he had his own hit with "In the House of Stone and Light."
How a country weeper and a blues number made "rolling stone" the most popular phrase in rock.
P.F. was a teenager writing hits and playing on tracks for Jan & Dean when he wrote a #1 hit that got him blackballed.