"Baby One More Time" was originally offered to TLC but they passed on it. The R&B trio felt uncomfortable singing "'hit me baby one more time."
The Kate Bush song "Running Up That Hill" is about making a deal with God to switch lives with your partner so there would be no more misunderstandings.
Jeff Lynne sang the word "groose" in the chorus of "Don't Bring Me Down" as a nonsense placeholder, but left it in when he found out it means "greetings" in German ("gruss").
"Islands in the Stream" was originally written by The Bee Gees as an R&B song. It was originally written by the brothers for Marvin Gaye, however it was recorded instead as a duet by Kenny Rogers and Dolly Parton with the Gibb Brothers also contributing vocals.
The third verse of "Mmm Mmm Mmm Mmm" by Crash Test Dummies ("they shook and lurched all over the church floor...") was inspired by girl whose parents would speak in tongues at their Pentecostal service.
"Girl Crush" by Little Big Town came from the hashtag #girlcrush, which its co-writer, Lori McKenna, spotted on Instagram.
Brenda talks about the inspiration that drove her to write hit songs like "Get Here" and "Piano in the Dark," and why a lack of formal music training can be a songwriter's best asset.
The man who created Yacht Rock with "Sailing" wrote one of his biggest hits while on acid.
A drummer for one of the most successful metal bands of the last decade, Chris talks about what it's like writing and performing with Slipknot. Metal-neck is a factor.
Daniel Lanois on his album Heavy Sun, and the inside stories of songs he produced for U2, Peter Gabriel, and Bob Dylan.
Director Mark Pellington on Pearl Jam's "Jeremy," and music videos he made for U2, Jon Bon Jovi and Imagine Dragons.
"Come On Eileen" was a colossal '80s hit, but the band - far more appreciated in their native UK than stateside - released just three albums before their split. Now, Dexys is back.
