Enrique Iglesias' single "Bailando" was the first ever Spanish-language song to reach one billion views on YouTube.
Mark Knopfler of Dire Straits wrote "Private Dancer," which went to Tina Turner when he realized it wasn't a song for a man to sing.
Calvin Harris' "Blame" was the first ever song to break ten million streams in a week on Spotify. The record was set during the seven days of September 8 to September 14 2014.
John Fogerty was not born on the bayou - he's from Berkeley, California. He got the idea for the song when CCR was on tour in Louisiana.
"Ho Hey" by The Lumineers spent 62 weeks on the Hot 100, tying with Lifehouse's 2005 single "You And Me" for the longest stay on the chart for a song by a rock band.
"The Night Chicago Died" was written and recorded by the British group Paper Lace. They talk about Al Capone in the song, but got a lot of details wrong - understandable since they wrote it based on gangster movies.
Is Owl City on a quest for another hit like "Fireflies?" Adam answers that question and explains the influences behind many others.
Was "Pearl" Eddie Vedder's grandmother, and did she really make a hallucinogenic jam? Did Journey have a contest to name the group? And what does KISS stand for anyway?
The revered singer-songwriter talks inspiration and explains why she put a mahout in "Drop the Pilot."
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.
Soul music legend Bill Withers on how life experience and the company you keep leads to classic songs like "Lean On Me."
Starting in Virginia City, Nevada and rippling out to the Haight-Ashbury, LSD reshaped popular music.