The lyrics to ABBA's "Knowing Me, Knowing You":

No more carefree laughter
Silence ever after
Walking through an empty house, tears in my eyes
Here is where the story ends, this is goodbye

Knowing me, knowing you (ah-haa)
There is nothing we can do
Knowing me, knowing you (ah-haa)
We just have to face it, this time we're through
(This time we're through, this time we're through
This time we're through, we're really through)
Breaking up is never easy, I know but I have to go
(I have to go this time
I have to go, this time I know)
Knowing me, knowing you
It's the best I can do

Mem'ries (mem'ries), good days (good days), bad days (bad days)
They'll be (they'll be), with me (with me) always (always)
In these old familiar rooms children would play
Now there's only emptiness, nothing to say

Knowing me, knowing you (ah-haa)
There is nothing we can do
Knowing me, knowing you (ah-haa)
We just have to face it, this time we're through
(This time we're through, this time we're through
This time we're through, we're really through)
Breaking up is never easy, I know but I have to go
(I have to go this time
I have to go, this time I know)
Knowing me, knowing you
It's the best I can do

Odd material for a pop song. Not just the subject of breaking up (since the song explicitly alludes to the most famous break up song of all), but the resignation in the lyrics, a sort of giving up on happiness. What I like best is the echo in the refrain, where a male voice repeats the chorus behind the female lead, as if he is realizing the same thing as her at the same time. Rarely does pop music tackle such subjects with so much maturity and wisdom, and, ultimately, with as much complexity as life.