The Matchbox Twenty song "3 AM" is about the difficult times lead singer Rob Thomas spent caring for his mother, who had cancer.
Ariana Grande's hit "Problem" started off as a track written by One Direction songwriter Savan Kotecha. He gave it the working title of "The Whisper Song," after a 2005 Ying Yang Twins hit.
Rihanna was Pitbull's first choice to sing on "Timber," but she wasn't available at the time so he enlisted his RCA labelmate Kesha instead.
"A Hard Day's Night" was the title song to The Beatles' first movie, which was surprisingly good: it was nominated for two Oscars.
Bob Seger's "Beautiful Loser" was inspired by a book written by Leonard Cohen called Beautiful Losers.
Sam Smith's "Writing's On The Wall" was the first ever James Bond theme song to reach #1 in the UK.
The top Contemporary Christian artist of all time on song inspirations and what she learned from Johnny Carson.
Chad tells tales from his time as drummer for Nirvana, and talks about his group Before Cars.
Martyn talks about producing Tina Turner, some Heaven 17 hits, and his work with the British Electric Foundation.
When he was asked to write a song for the Singles soundtrack, Mark thought the Seattle grunge scene was already overblown, so that's what he wrote about.
Test your metal - Priest, Maiden, and Beavis and Butt-head show up in this one.
