Puff Daddy didn't get permission to sample the Police song "Every Breath You Take" on his Notorious B.I.G. tribute "I'll Be Missing You," but he later reached an agreement and even performed the song with Sting.
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.
Harry Chapin's wife Sandy wrote the lyrics to "Cat's In The Cradle," which were actually about her first husband.
The most famous pop song featuring a bassoon: "The Tears of a Clown" by Smokey Robinson & the Miracles.
Michael Jackson wrote the Diana Ross hit "Muscles," which he named after his pet boa constrictor.
Katy Perry co-wrote Iggy Azalea's hit single "Black Widow." Perry was originally going to sing on the track, but she couldn't fit it into her schedule, so Rita Ora provided the sung vocals instead.
Rufus Wainwright on "Hallelujah," his album Unfollow The Rules, and getting into his "lyric trance" on 12-hour walks.
A top country songwriter, Barry talks about writing hits for Little Big Town, Tim McGraw and Jason Aldean.
The frontman for one of Canada's most well-known punk rock bands talks about his Eddie Vedder encounter, Billy Talent's new album, and the importance of rock and roll.
From the lake in "Roundabout" to Sister Bluebird in "Starship Trooper," Jon Anderson talks about how nature and spirituality play into his lyrics for Yes.
How Bing Crosby, Les Paul, a US Army Signal Corps Officer, and the Nazis helped shape rock and Roll.
Famous songs that lent their titles - and in some cases storylines - to movies.