FIRST QUESTION about Irving Berlin

I imagine you have had the time to watch all the performances. Then, I ask you the first question about the composer:
Which of these songs have been composed by Irving Berlin?
a) Three coins in a fountain
b) White Christmas
c) He used to be blind
d)Waiting for Santa Claus

If you know the solution, write a message to me, please.
Here is my address:
des.fleurs.pour.un.coeur.colibri@gmail.com

PUTTIN´ ON THE RITZ, a song by Irving Berlin

You can participate in our quiz. You will have to answer some questions about this song by Irving Berlin. But first, enjoy some good performances. Just click on the links below.
What is the prize? Ah, surpriZe!!!

A flashmob in Moscow:

http://www.youtube.com/watch?feature=player_embedded&v=KgoapkOo4vg

Performed by Philip Keer-kor-ov:

http://www.youtube.com/watch?v=PauiXy9zE5g

Taco´s version:

http://www.youtube.com/watch?feature=endscreen&v=eubhg1gTyj8&NR=1

If you want to sing the song, here the lyrics:

http://www.youtube.com/watch?v=X1_x4D0yi8k

Jeeves and Wooster:

http://www.youtube.com/watch?v=9VGItt9cCgc

Another version by Leningrad Cowboys:

http://www.youtube.com/watch?v=G-iiz6g1wsM

Performed by Cory Hall:

http://www.youtube.com/watch?v=w4UpUkDH_7A

By Shiny Toy Guns:

http://www.youtube.com/watch?v=vcwca7QbdjE

Performed by Judy Garland:

http://www.youtube.com/watch?v=cmHkgLwZWWU

Now, Harry Richman:

http://www.youtube.com/watch?v=k68Wn6l5GuU

Amazing:

http://www.youtube.com/watch?v=F7dz6WGU-zo

Oh, that Clark Gable!!

http://www.youtube.com/watch?v=ACGHxR7pH_c

Michael Jackson and La Toya dancing like Fred Astaire and Ginger Rogers.

http://www.youtube.com/watch?v=4uXlsf3tvNo

 Young Frankenstein dancing this song

http://www.youtube.com/watch?v=co6-tYS9k1U

Another funny version:

http://www.youtube.com/watch?NR=1&v=FCn8FniHHz0&feature=fvwp