"Que Sera, Sera (Whatever Will Be, Will Be)" was written for Doris Day to sing in the Alfred Hitchcock movie The Man Who Knew Too Much.
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.
A problem with his eyes gave Jackson Browne the idea for "Doctor My Eyes," which became a song about a man whose mental health suffers when he sees the world for what it really is.
The most famous song to prominently feature a French horn is "God Only Knows" by The Beach Boys.
Featured in the 1978 musical Evita, "Don't Cry For Me Argentina" became the biggest selling UK hit by a female vocalist (Julie Covington).
Elvis Presley's "A Little Less Conversation" was just a minor hit when it was released in 1968, but a 2002 remix made the song a global smash, taking it to #1 in a number of countries, including Australia and the UK.
He's a singer and an actor, but as a songwriter Paul helped make Kermit a cultured frog, turned a bank commercial into a huge hit and made love both "exciting and new" and "soft as an easy chair."
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.
When he was asked to write a song for the Singles soundtrack, Mark thought the Seattle grunge scene was already overblown, so that's what he wrote about.
Gary Lewis and the Playboys had seven Top 10 hits despite competition from The Beatles. Gary talks about the hits, his famous father, and getting drafted.
Guitarist Tony Iommi on the "Iron Man" riff, the definitive Black Sabbath song, and how Ozzy and Dio compared as songwriters.
Lori's songs have been recorded by Faith Hill and Sara Evans. She's performed on the CMAs and on Oprah. She also has five kids.
