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.
A popular contemporary folk singer, Williams still remembers the sticky note that changed her life in college.
Nick made some of the biggest videos on MTV, including "The Final Countdown," "Heaven" and "Don't Know What You Got (Till It's Gone)."
The guy who brought us "Stacy's Mom" also wrote the Jane Lynch Emmy song and Stephen Colbert's Christmas songs.
Fishbone has always enjoyed much more acclaim than popularity - Angelo might know why.
Wilder's hit "Break My Stride" had an unlikely inspiration: a famous record mogul who rejected it.

"Name" by The Goo Goo Dolls was partly inspired by lead singer John Rzeznik's flirtation with the MTV VJ Kennedy, who didn't want him to tell anyone her real name.

The Matchbox Twenty song "3 AM" is about the difficult times lead singer Rob Thomas spent caring for his mother, who had cancer.

"Here Comes Your Man" is the closest the Pixies came to a hit in America. It was rumored to be about a drug dealer, but Black Francis says it's just a story about some hobos who travel by train and die in an earthquake.

"Dirty Work" is one of the few Steely Dan songs not sung by Donald Fagen. The lead vocal is by David Palmer, who sang on two tracks from their debut album.

Salt's "mighty good man" in the Salt-N-Pepa "Whatta Man" video is played by Tupac Shakur.

The Motown team of Holland-Dozier-Holland wrote "Where Did Our Love Go" with The Marvelettes in mind, but they turned it down. When The Supremes recorded the tune, Diana Ross was forced to sing in a lower, breathier style than she was used to because it wasn't written for her.