The Canadian superstar talks about his sudden rise to fame, and tells the stories behind his hits "Sunglasses At Night," "Boy In The Box" and "Never Surrender."
Howard explains his positive songwriting method and how uplifting songs can carry a deeper message.
Medley looks back on "Unchained Melody" and "You've Lost That Lovin' Feelin'" - his huge hits from the '60s that were later revived in movies.
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.
Zac tells the story of Hanson's massive hit "MMMbop," and talks about how brotherly bonds effect their music.
In 1986, a Stephen King novella was made into a movie, with a classic song serving as title, soundtrack and tone.