Frankie Valli & The Four Seasons - The Night (1972)
Another real driver, with heavy use of tambourine. Really deep heavy trombone/tuba work, which you just don't hear in a pop song. In fact, this song is really bass heavy, electric bass, the aforementioned brass, organ work, even the into vocals are about 2 octaves lower than you might expect from a Four Seasons track. The guitar after each chorus is really trippy and even less expected.
The harmonies are what you would expected from a seasoned Frankie Valli & The Four Seasons. They'd been recording together for 10 years (well, not the whole group, the band had had more than a dozen members in that time) so they knew what worked. The album this was on was not a success for them, but they were back in the top of the charts with December, 1963 (Oh What a Night) just a few years later.