"Whole Lotta Love" was Led Zeppelin's only US Top 10 hit, charting at #4. Many of their songs, including "Stairway To Heaven," were not released as singles, as it was considered bad form in England to make people pay for singles that were on albums.
The Foo Fighters song "Everlong" isn't about Kurt Cobain, but a low point in Dave Grohl's life when he was broke and homeless.
Eddie Van Halen played the guitar solo on "Beat It" as a favor to Quincy Jones, who produced the album.
Jon Bon Jovi earned his first movie credit - Young Guns II - by writing "Blaze Of Glory" for the film.
Songwriter Wayne Carson came up with "Always On My Mind" on the phone to his wife when he was apologizing to her for being stuck at the office.
"Radioactive" set an industry record for the slowest climb to the top five in the Hot 100 chart's history when it jumped from #6 to #4 in its 42nd week.
The Doobies guitarist and lead singer, Tom wrote the classics "Listen To The Music," "Long Train Runnin'" and "China Grove."
Billie Jean, Delilah, Sara, Laura and Sharona - do you know who the girls in the songs really are?
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.
Untangling the events that led to the "Stairway To Heaven" lawsuit.
Tom talks about the evolution of Cinderella's songs through their first three albums, and how he writes as a solo artist.
How well do you know your protest songs (including the one that went to #1)?