Abba has a unique sound, but this song is even unique inside of that realm. It doesn't have the fast pace of songs like "Take A Chance On Me" or "Mamma Mia", and, especially at the start, sounds like a jam started at a seedy nightclub on the wrong side of town. But as soon as the vocals hit, you'll feel like you're at the exclusive lounge uptown that is by invitation only.
It's the fifth of six Abba songs in the Top 500, so we'll visit Sweden by way of Abba once more this spring. :)