The Creedence Clearwater Revival song "Fortunate Son" is about how the Vietnam war was being fought by soldiers without the privilege or connections to get out of it. "It's the old saying about rich men making war and poor men having to fight them," John Fogerty said.
Fifth Harmony was going to call their song "Work," but they changed it to "Work from Home" when Rihanna released a song with that title.
Eminem sampled Dido's "Thank You" for his song "Stan," and Dido appeared in his video as Stan's unfortunate wife.
Bryan Adams' 1987 song "Heat Of The Night" has the distinction of being the first commercially released cassette single in the US.
Mariah Carey's song "The Roof" is about her first kiss with Yankees shortstop Derek Jeter.
"What's Up" by 4 Non Blondes has endured as one of the most popular songs of the '90s, but it wasn't a huge hit at the time and the band split after one album. Frontwoman Linda Perry went on to write hits for Pink and Christina Aguilera.
The Scorpions and UFO guitarist is also a very prolific songwriter - he explains how he writes with his various groups, and why he was so keen to get out of Germany and into England.
Phil was a songwriter, producer and voice behind many Philadelphia soul classics. When disco hit, he got an interesting project: The Village People.
Did they really trade their guitarist to The Doobie Brothers? Are they named after something naughty? And what's up with the band name?
When Judd Apatow needed under-appreciated rockers for his Knocked Up sequel, he immediately thought of Parker, who just happened to be getting his band The Rumour back together.
Lyrics don't always follow the rules of grammar. Can you spot the ones that don't?
