"Sloop John B" is a traditional West Indian folk song, and it was a huge hit for The Beach Boys in 1966. They tweaked the lyric, "This is the worst trip since I've been born" to "...I've ever been on" as a wink to acid culture.
Enrique Iglesias' single "Bailando" was the first ever Spanish-language song to reach one billion views on YouTube.
"True" by Spandau Ballet is about chief songwriter Gary Kemp's unrequited love for Altered Images singer and Gregory's Girl star Clare Grogan.
David Bowie's "Space Oddity" tells the story of an astronaut who cuts off communication and floats into space. The BBC used it extensively in their coverage of the 1969 moon landing - an odd choice considering the lyrics.
"Name" by The Goo Goo Dolls was partly inspired by lead singer John Rzeznik's flirtation with the MTV VJ Kennedy, who didn't want him to tell anyone her real name.
Christine McVie wrote "Songbird" for Fleetwood Mac's Rumours album in just half a hour after she woke up in the middle of the night with the song in her head.
Medley looks back on "Unchained Melody" and "You've Lost That Lovin' Feelin'" - his huge hits from the '60s that were later revived in movies.
At 80 years old, Yoko has 10 #1 Dance hits. She discusses some of her songs and explains what inspired John Lennon's return to music in 1980.
Richard explains how Joe Walsh kickstarted his career, and why he chose Hazard, Nebraska for a hit.
The good doctor shares some candid insights on recording with Phil Spector and The Black Keys.
The Garbage drummer/songwriter produced the Nirvana album Nevermind, and Smashing Pumpkins' Gish and Siamese Dream.
