Harrison wrote "It's All Too Much" as a celebration of his experiences with the hallucinogenic drug LSD, although he subsequently found the same realisations in Transcendental Meditation and denounced LSD after visiting Haight-Ashbury in August 1967. The song features a Hammond organ, which gives the track a drone-like quality typical of Indian music, electric guitar feedback, and an overdubbed brass section. Largely self-produced by the band, the recording displays an informal approach that contrasts with the discipline of the Beatles' previous work, particularly "Sgt. Pepper". The song's sequence in the "Yellow Submarine" film has been recognised for its adventurousness in conveying a hallucinogenic experience.