The Men Without Hats lead singer wrote "The Safety Dance" after getting kicked out of a bar for dancing too aggressively. The song is literally about being safe to dance if you want to.
"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.
"Uptown Funk" by Mark Ronson was 2015's best-selling single in both the U.S. and U.K.
"Amarillo By Morning" got its title from a Fed Ex commercial that promised to deliver packages the next day to places like Amarillo. It's George Strait's most famous song, but was written and originally released by Terry Stafford nine years earlier.
The "Mum-mum-mum-ma" hook on lady Gaga's "Poker Face" was sampled from Boney M's 1977 hit "Ma Baker."
"Pretty In Pink" by Psychedelic Furs was released in 1981. Five years later, it inspired a movie of the same name starring Molly Ringwald, Andrew McCarthy and Jon Cryer. The song was remixed for the re-release to have more pop appeal.
Dave explains how the video appropriated the meaning of "Runaway Train," and what he thought of getting parodied by Weird Al.
David Gray explains the significance of the word "Babylon," and talks about how songs are a form of active imagination, with lyrics that reveal what's inside us.
Richie talks about the impact of "Amazed," and how his 4-year-old son inspired another Lonestar hit.
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.
When a song describes a wedding, it's rarely something to celebrate - with one big exception.
Do you know who wrote Patti Smith's biggest hit? How about the Grease theme song? See if you can match the song to the writer.