Paula Abdul's "Forever Your Girl" was written by Oliver Leiber, who despite being the son of Jerry Leiber from Leiber & Stoller, was an unknown songwriter.
"Sing" was inspired by a girl that Ed Sheeran met in Las Vegas in the summer of 2013, when "one thing led to another and now she's kissing my mouth."
"Achy Breaky Heart" was originally recorded in 1991 by The Marcy Brothers as "Don't Tell My Heart." That original version had the lyrics: "Don't tell my heart, my achy, breakin' heart..."
If you have a whole day to kill, you can check out the full version of Pharrell Williams' "Happy" music clip, which was the world's first ever 24-hour music video.
Taio Cruz throws his hands up "sometimes" in "Dynamite" because the song was originally written about surrender.
Bob Marley's backup singers, The I Threes, claim they are the "Three Little Birds" in his famous song.
The singer-songwriter Melanie talks about her spiritual awakening at Woodstock, "Brand New Key," and why songwriting is an art, not a craft.
Martyn talks about producing Tina Turner, some Heaven 17 hits, and his work with the British Electric Foundation.
The man who ran Nirvana's first label gets beyond the sensationalism (drugs, Courtney) to discuss their musical and cultural triumphs in the years before Nevermind.
Laura Nyro talks about her complex, emotionally rich songwriting and how she supports women's culture through her art.
"Come On Eileen" was a colossal '80s hit, but the band - far more appreciated in their native UK than stateside - released just three albums before their split. Now, Dexys is back.
Vince Gill, Emmylou Harris and Lyle Lovett are just a few of the artists who have looked to Clark for insightful, intelligent songs.