The fadeout on Drake's "Hotline Bling" lasts 55 seconds - one of the longest outros of any hip-hop hit.
Bono wrote "Sweetest Thing" for his wife to make up for working on her birthday.
"Crazy Train" by Ozzy Osbourne is about the Cold War concept of Mutually Assured Destruction (M.A.D.) should any nuclear missile be fired.
The first single to simultaneously top the UK and US charts was The Everly Brothers' "Cathy's Clown" in May 1960.
"Sunday Girl" was written by Blondie guitarist Chris Stein to cheer up Debbie Harry after her cat had run away whilst they were away on tour. The gray cat was called Sunday Man.
"The Night Chicago Died" was written and recorded by the British group Paper Lace. They talk about Al Capone in the song, but got a lot of details wrong - understandable since they wrote it based on gangster movies.
The lead singer/lyricist for Anberlin breaks down "Impossible" and covers some tracks from their 2012 album Vital.
The man who created Yacht Rock with "Sailing" wrote one of his biggest hits while on acid.
The stories behind "Whole Of The Moon" and "Red Army Blues," and why rock music has "outlived its era of innovation."
Donny Osmond talks about his biggest hits, his Vegas show, and the fan who taught him to take "Puppy Love" seriously.
A founding member of the band War, Harold gives a first-person account of one of the most important periods in music history.
John Lennon, Paul Simon and Lynyrd Skynyrd are some of the artists who have written revenge songs. Do you know who they wrote them about?