In North America, it was the first song of the album to receive significant on modern rock radio stations, which "Some Might Say" and "Roll with It" had not achieved.

"Morning Glory" contains lyrical references to the drug cocaine and to the Beatles' song "Tomorrow Never Knows",[2] and partially serves as the album's title track; the full line in its parent album's name is present in the chorus' lyrics.

Kenneth Partridge said of the riff that opens "Morning Glory" that it is "strikingly similar" to that of "The One I Love" by American rock band R.E.M.

The band is performing in an industrial apartment, suggested by the opening shots of the video to be the Balfron Tower (not to be mistaken with Trellick Tower), as the building's tenants (including a man with a baby, a young boy, an old man and a female cyclist, an elderly woman with a hair dryer, a middle-aged woman in a house coat, a mafia boss and two bodyguards, an Indian couple, a drug addict, another elderly woman, and young woman and her mother) take offence to the loud noise of the band's playing and come up to knock on the door and look in the mail slot.

The video concludes with all the tenants gathering around the door, beating on it and yelling, just as the band finishes playing and packs up their instruments.