"November Rain" by Guns N' Roses has a literary influence: The lyric is based on a story called Without You by Del James.
Sia planned to quit her solo career after her 2014 album 1000 Forms of Fear, but the "Chandelier" video proved so popular it drew her back in.
The first big hit by an X Factor winner was "Bleeding Love" by Leona Lewis, who won the British version of the show in 2008. The song was intended for Jesse McCartney, who wrote it with Ryan Tedder.
The Steve Miller song "Abracadabra" was inspired by Diana Ross and The Supremes. Miller first met the girl group when they performed together on NBC's Hullabaloo in 1966, and he wrote the lyrics after spotting Diana Ross skiing years later.
Ariana Grande's collaboration with Zedd, "Break Free" came about after the Russian-German producer overheard Grande performing at a label showcase while he was backstage, and he mentioned to his team that he wanted to work with her.
Simon Rex from the TV show What I Like About You and Wilmer Valderrama from That 70s Show both appear in the LMFAO video for "Sexy and I Know It."
Charlie discusses the songs that made him a Southern Rock icon, and settles the Devil vs. Johnny argument once and for all.
Lots of life lessons in these Eagles lyrics - can you match them to the correct song?
The 10 biggest "retirement tours" that didn't take.
The guitarist/songwriter explains how he came up with his signature sound, and deconstructs some classic Fear Factory songs.
The flautist frontman talks about touring with Led Zeppelin, his contribution to "Hotel California", and how he may have done the first MTV Unplugged.
Tyler talks about his true love: songwriting. How he identifies the beauty in a melody and turns sorrow into art.