"What A Wonderful World," released in 1967 four years before Louis Armstrong died, didn't find an audience in America until 1988 when it was used in the movie Good Morning, Vietnam.
Lionel Richie hosted the American Music Awards the night he recorded "We Are The World."
"Instant Karma" is one of John Lennon's most hopeful songs, written and recorded in one day at a time when he felt people were pulling together in a positive direction.
Otis Redding often ad-libbed vocals at the end of songs, but for "(Sittin' On) The Dock Of The Bay" he just whistled instead - it became the most famous whistling in song history.
Feist's "1234" is "about lost love, and the hope to recapture what you once had," but it's best known for the Sesame Street version about counting to four.
The lyrics for "Mary, Did You Know?" were written by Christian singer and comedian Mark Lowry, after his pastor asked him to write a Christmas musical for their church. Southern gospel musician Buddy Greene later added music to his words.
Can you be married in one country but not another? Only if you're part of a gay couple. One of the first famous singers to come out as a lesbian, Janis wrote a song about it.
The Kiss rocker covers a lot of ground in this interview, including why there are no Kiss collaborations, and why the Rock Hall has "become a sham."
We've heard of artists putting their hearts into their music, but some take it literally.
If the name Citizen Dick means anything to you, there's a chance you'll get some of these right.
Howard explains his positive songwriting method and how uplifting songs can carry a deeper message.
Keyboard great David Sancious talks about his work with Sting, Seal, Springsteen, Clapton and Aretha, and explains what quantum physics has to do with making music.