OK. Happy Days are Here Again. Lyrics and music:

[trof]

So long sad times
Go long bad times
We are rid of you at last

Howdy gay times
Cloudy gray times
You are now a thing of the past

Happy days are here again
The skies above are clear again
So let's sing a song of cheer again
Happy days are here again

Altogether shout it now
There's no one
Who can doubt it now
So let's tell the world about it now
Happy days are here again

Your cares and troubles are gone
There'll be no more from now on
From now on ...

Happy days are here again
The skies above are clear again
So, Let's sing a song of cheer again

Happy times
Happy nights
Happy days
Are here again!

Music:
http://kids.niehs.nih.gov/lyrics/happydays.htm

[Yo_Mama_Been_Loggin]

1. A video of the song that shows Barack Obama at the end

http://www.youtube.com/watch?v=gqsT4xnKZPg&feature=related

[trof]

2. Ah yes. Ben Selvin and The Crooners.

I remember them well.
;-)