Jay-Z did the rap on "Crazy In Love" at the last minute. He and Beyoncé had started dating and the Texan songstress asked him to get on the song the night before she had to turn in her album.
Ronnie Van Zant wrote the Lynyrd Skynyrd classic "Gimme Three Steps" after making the mistake of dancing with a girl whose boyfriend was in the bar and probably had a gun. He asked for a 3-step head start.
"Doo Wop (That Thing)" by Lauryn Hill was the only US #1 hit of the '90s entirely written, produced and performed by a female singer.
"Rosanna" by Toto got its name from the actress Rosanna Arquette, who was dating Toto keyboard player Steve Porcaro.
After 47 visits to the Hot 100, Justin Bieber topped the tally for the first time on September 17, 2015 with "What Do You Mean?"
Fall Out Boy's "The Phoenix" samples the classical work "Allegro Non Troppo," which was composed by Dmitri Shostakovich in 1941. Vocalist Patrick Stump was inspired by "the creepiness" of the strings.
Was Dr. Feelgood a dentist? Did the "Crüecifixion" really happen?
Scott was Stevie Wonder's bass player before becoming a top session player. Hits he played on include "I Will Survive," "Being With You" and "Sara Smile."
"I'll Be" was what Edwin called his "Hail Mary" song. He says it proves "intention of the songwriter is 180 degrees from potential interpretation by an audience."
The Scorpions and UFO guitarist is also a very prolific songwriter - he explains how he writes with his various groups, and why he was so keen to get out of Germany and into England.
The Guns N' Roses rhythm guitarist in the early '90s, Gilby talks about the band's implosion and the side projects it spawned.
The Creed lead singer reveals the "ego and self-fulfillment" he now sees in one of the band's biggest hits.