Dream On (Glee)

"Dream On" is a musical number performed in the nineteenth episode of the first season of the television series Glee, titled "Dream On." The episode and the song performance are notable for featuring guest star Neil Patrick Harris as Bryan Ryan, Will Schuester's (Matthew Morrison) former high school rival.

The Glee version of "Dream On" is a mashup featuring both the original Aerosmith song "Dream On" (1973) and a segment of "The Dreamer" by Ozzy Osbourne (1991). The number is performed by Morrison, Harris, Cory Monteith (as Finn Hudson), and the New Directions glee club.

The song serves a significant narrative function within the episode, reflecting themes of unfulfilled dreams, regret, and the pursuit of ambitions. Will and Bryan confront their contrasting life paths, while Finn grapples with his own emerging musical aspirations. The arrangement and staging are designed to highlight the emotional weight of the song's lyrics and the characters' internal conflicts.

The Glee version of "Dream On" was released as a single and achieved commercial success, charting on the Billboard Hot 100. It received generally positive reviews, with critics praising the vocal performances and the emotional resonance of the arrangement.