Final answer:
The song "Tomorrow Never Knows" was musically unique for its innovative studio techniques like tape loops, reverse sounds, and ADT, its groundbreaking single-chord structure inspired by Indian music, and contribution to the psychedelic rock genre.
Step-by-step explanation:
The song “Tomorrow Never Knows” featured on The Beatles’ album “Revolver” was musically unique due to several pioneering recording techniques and its influence on the development of psychedelic rock. Its innovation lies in the use of tape loops, manipulated and reversed sounds, and the technique known as automatic double tracking (ADT). This resulted in an avant-garde sound that contrasted starkly with the rock and roll of the time, indicating The Beatles' movement toward experimentation and the use of the studio as an instrument in itself.
The song's drone-like, repetitive rhythm was inspired by Indian music, predominantly reflecting a single chord throughout. Its unique nature paved the way for new genres and expanded the horizons of what could be accomplished musically within the structure of a pop song.