"Crazy Train" is notable for its signature guitar riff, which was composed by Ozzy's guitarist, Randy Rhoads. The song's lyrics, written by Ozzy, explore themes of madness and mental instability, reflecting the singer's personal struggles with drug and alcohol addiction at the time.
The music video for "Crazy Train" further solidified its iconic status. Directed by David Mallet, the video featured Ozzy in a variety of surreal and hallucinatory settings, showcasing his theatrical and larger-than-life personality. The video received heavy rotation on MTV and contributed to the song's widespread popularity.
"Crazy Train" has become an enduring classic in rock and metal music. Its powerful riff, memorable lyrics, and infectious energy have made it a fan favorite and a staple of Ozzy Osbourne's live performances throughout his career. The song's influence can be heard in countless subsequent heavy metal and hard rock bands, cementing its place in music history as one of the most important songs by Ozzy Osbourne.