At Last is about the death of someone, and their love is singing to them, ‘At last we’re together again.’

At Last first sung by Etta James.

At last my love has come along
My lonely days are over and life is like a song, oh yeah
At last the skies above are blue
My heart was wrapped up clover the night I looked at you
I found a dream that I could speak to
A dream that I can call my own
I found a thrill to press my cheek to
A thrill I’ve never known, oh yeah
You smiled, you smiled oh and then the spell was cast
And here we are in Heaven
For you are mine at last