The longest-running #1 US hit for a member of the Jackson family is Janet's "That's The Way Love Goes," with eight weeks on top.
Katy Perry's "Dark Horse" was co-written by Sarah Hudson, who was a member of the pop group Ultraviolet Sound. Though Sarah isn't related to Katy (whose real name is Katy Hudson), she is the first cousin of another famous person with the same name, the actress Kate Hudson.
Jay-Z was going to ask Mary J. Blige to duet on "Empire State of Mind," but he decided on Alicia Keys when he heard the piano stabs on the track.
Paul McCartney wrote "Blackbird" in Scotland after reading about race riots in the US, triggered when federal courts forced the racial desegregation of the Arkansas capital's school system.
Richard Harris, who played Professor Dumbledore in the first two Harry Potter movies, had a hit in 1968 with "MacArthur Park."
Ronnie Dunn wrote "Boot Scootin' Boogie" before he teamed up with Kix Brooks to form Brooks & Dunn. It was originally recorded by the country group Asleep At The Wheel, but Brooks & Dunn did it themselves when it got its own line dance.
When singers started spoofing their own songs on Sesame Street, the results were both educational and hilarious - here are the best of them.
After studying in Paris with a famous composition teacher, Charles became the most successful writer of TV theme songs.
The renown Texas songwriter has been at it for 40 years, with tales to tell about The Flatlanders and The Clash - that's Joe's Tex-Mex on "Should I Stay or Should I Go?"
The Sevendust frontman talks about the group's songwriting process, and how trips to the Murder Bar helped forge their latest album.
Kiss is the subject of many outlandish rumors - some of which happen to be true. See if you can spot the fakes.
Test your metal - Priest, Maiden, and Beavis and Butt-head show up in this one.