"Lean On" was originally sent by Major Lazer to both Rihanna and Nicki Minaj's camps as a slower reggae track. After both parties rejected the tune, Major Lazer recruited Danish singer MØ to supply vocals and recorded it themselves.
Joni Mitchell wrote "Woodstock" - the most popular song about the festival - but didn't attend the event because she was booked on The Dick Cavett Show.
"Ho Hey" by The Lumineers is about New York City, where lead singer Wesley Schultz moved to make it in music. He was dismayed to find many "trust fund kids" in the music scene while he struggled to pay the rent.
Jay-Z's version of "99 Problems" is a cover of a 1993 song by Ice-T with the lyrics changed to be about Jay's rise to fame.
"Rockin' In The Free World" is a very pro-America title, but the song takes on politicians who are indifferent to the poor and disenfranchised.
New Order got the title for "Blue Monday" from an illustration that read "Goodbye Blue Monday" in the Kurt Vonnegut book Breakfast Of Champions. The image refers to the invention of the washing machine improving housewives' lives.
Mike Rutherford talks about the "Silent Running" storyline and "Land Of Confusion" in the age of Trump.
Pete produced Dwight Yoakam, Michelle Shocked, Meat Puppets, and a very memorable track for Roy Orbison.
Beef with Bon Jovi? An unfortunate Spandex period? See if you can spot the true stories in this Metallica version of Fact or Fiction.
With his X-wife Exene, John fronts the band X and writes their songs.
