There's something about the Carpenters song "Sing" that makes me want to stomp cute, fuzzy little animals.

Though their song "Goodbye to Love" really suits my mood.

From Goodbye to Love:

So I've made my mind up I must live my life alone
And though it's not the easy way
I guess I've always known
I'd say goodbye to love.

All the years of useless search
Have finally reached an end
Loneliness and empty days will be my only friend
From this day love is forgotten
I'll go on as best I can.