Pure '80s synthpop excellence. Something about the combination of synth organs and minor keys was uncovered back then, and this song is a masterpiece of exploiting the effect.
While Naked Eyes' first hit "Always Something There to Remind Me" was a cover (though highly embellished), "Promises, Promises" was their original, proving their talent. The song's classic pop form - verse, pre-chorus, chorus, instrumental - demonstrates how much '80s music went back to the purity of '50s and early '60s songwriting, eschewing the formal sprawl of the late '60s and '70s. It made for a cleaner, more digestible product, built for maximum catchiness and addiction. I am just fine with that strategy.
This song spun and spun on my record player when I was a kid.