The song uses a sample from the song “Dream On” by rock group Aerosmith. Joe Perry of Aerosmith plays the guitar solo at the end of the song, and Steven Tyler sings the chorus of the song.
“Sing for the Moment” was later released on Eminem’s greatest hits album Curtain Call: The Hits. “Sing for the Moment” deals with the themes of rap music’s effect on society and the misunderstanding Eminem claims critics and parents have towards his message.
Eminem uses the song to refute critics who have accused him of promoting violence to young people, saying that committing a crime is ultimately up to the offender. He also explains that his music has an advantage to young people, claiming that his music is a relief from boredom and depression. Eminem’s altercation with a bouncer named John Guerrera is also referenced in this song.
The song reached #14 on the U.S. Billboard Hot 100 Singles Chart, #6 on the UK Singles Chart, and #5 on the Australian ARIAnet Singles Chart. – Wikipedia
http://www.youtube.com/watch?v=WfcZeLpWQsY