"Sing" was inspired by a girl that Ed Sheeran met in Las Vegas in the summer of 2013, when "one thing led to another and now she's kissing my mouth."
"White "Christmas" was so popular that Bing had to re-record the song five years after the original 1942 recording because the original masters had been worn out from all the pressings. This is the version that became a holiday tradition.
"Strawberry Letter 23" by The Brothers Johnson was written by Shuggie Otis, whose girlfriend would send him letters written on strawberry scented paper.
Devo got the idea for their "Whip It" video from an article about a guy who owned a dude ranch and charged people to watch him remove his wife's clothes with a bullwhip.
Eminem sampled a song by Labi Siffre on "My Name Is." Siffre, a gay activist, made Em take out some gay humor in the lyric before allowing it.
No Doubt's hit "Don't Speak" is about Gwen Stefani's breakup with the band's bass player, Tony Kanal, after seven years together.
Webb talks about his classic songs "By the Time I Get to Phoenix," "Wichita Lineman" and "MacArthur Park."
These overtly religious songs crossed over to the pop charts, despite resistance from fans, and in many cases, churches.
When a song describes a wedding, it's rarely something to celebrate - with one big exception.
The Sevendust frontman talks about the group's songwriting process, and how trips to the Murder Bar helped forge their latest album.
The stories behind "Whole Of The Moon" and "Red Army Blues," and why rock music has "outlived its era of innovation."
Martyn talks about producing Tina Turner, some Heaven 17 hits, and his work with the British Electric Foundation.