Quincy Jones wanted to change the title of "Billie Jean" to "Not My Lover" so it wouldn't be confused with the tennis star Billie Jean King. Michael Jackson refused.
When the Christian band DC Talk covered Nirvana's "All Apologies" at concerts, they would change the line "Everyone is gay" to "Jesus is the Way."
There really is a Girl From Ipanema. Her name is Helo Pinheiro, and she would walk "Like a samba" past the bar the songwriters frequented, providing the inspiration.
Joni Mitchell wrote "Woodstock" - the most popular song about the festival - but didn't attend the event because she was booked on The Dick Cavett Show.
Keith Richards did some studio alchemy on "Street Fighting Man," which is all acoustic except the bass.
Jeff Lynne sang the word "groose" in the chorus of "Don't Bring Me Down" as a nonsense placeholder, but left it in when he found out it means "greetings" in German ("gruss").
The singer-songwriter Melanie talks about her spiritual awakening at Woodstock, "Brand New Key," and why songwriting is an art, not a craft.
Deep Purple's guitarist since 1994, Steve talks about writing songs with the band and how he puts his own spin on "Smoke On The Water."
The trail runs from flying saucer songs in the '50s, through Bowie, blink-182 and Katy Perry.
Before he was the champ, Ali released an album called I Am The Greatest!, but his musical influence is best heard in the songs he inspired.
Songwriting Hall of Famer Linda Perry talks about her songs "What's Up" and "Beautiful," her songwriting process, and her move into film music.
Cain talks about the divine inspirations for "Don't Stop Believin'" and "Faithfully."