Beyonce Knowles and Michelle Williams wrote the Destiny's Child song "Girl" for Kelly Rowland as an encouragement for her to end her relationship with a verbally and physically abusive boyfriend.
Eminem sampled a song by Labi Siffre on "My Name Is." Siffre, a gay activist, made Em take out some gay humor in the lyric before allowing it.
Ed Sheeran thought he wrote the x track "Photograph" on 6th Street in Denver, so he got a tattoo saying 6 ST. But when he returned it turned out the street was actually 6th Avenue.
"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.
In Gary Numan's "Cars," the message is that cars lead to a mechanical society devoid of personal interaction. This didn't stop automakers from using it in commercials. Both Nissan and Oldsmobile have used it in ads.
Pink Floyd's "Shine On You Crazy Diamond" is about their founding member Syd Barrett, who became an acid casualty. Notice the S-Y-D in the title.
The flautist frontman talks about touring with Led Zeppelin, his contribution to "Hotel California", and how he may have done the first MTV Unplugged.
From the cowbell on "Mississippi Queen" to recording with The Who when they got the wrong Felix, stories from one of rock's master craftsmen.
In this quiz, spot the artist who put Romeo into a song lyric.
Dave reveals the inspiration for "Feelin' Alright" and explains how the first song he ever wrote became the biggest hit for his band Traffic.
The top chant artist in the Western world, Krishna Das talks about how these Hindu mantras compare to Christian worship songs.
Go beyond The Beatles to see what you know about the British Invasion.