It’s a work of Fine Art, with music as the medium.
I never tire of hearing it.
Lush harmonies, natural pacing similar to a heart beat.
Nothing drowns the other features out. It’s fully balanced.
The songwriter became fascinated with tape loops after listening to the Beatles Revolution 9.
A Mellotron was used by 10cc to produce the orchestra effect. The same thing was later done with voices.
The lead voice and lyrics were a pleasant confection, not distracting from the music, but providing a whimsical lightness to the whole piece. It could have gone the other way, sounding morose and Blue.
Had a couple of break-ups through the years. The song still makes me cry to this day.