Her 2010 album "Love and Its Opposite" opens with the song "Oh, The Divorces" in which she sings:
Oh Jens, oh Jens
Your songs seem to look through a different lens
You're still so young
Love ends just as easy as it's begun
Now there's kids to tend
The legal biz
And custody
And oh, the divorces!
The "Tracey" he references is Tracey Thorn.
Her 2010 album "Love and Its Opposite" opens with the song "Oh, The Divorces" in which she sings:
Oh Jens, oh Jens Your songs seem to look through a different lens You're still so young Love ends just as easy as it's begun Now there's kids to tend The legal biz And custody And oh, the divorces!
So these lines are partly his answer back to her.