The most famous songs of 2011.

Below, are the songs most heard and played on the radio in the year 2011.
The artists who sing the songs below, are also the most famous in the years 2010-2011.
The source is a Brazilian site, called Vagalume.com.br

1 -The Time (dirty bit) - Black Eyed Peas

2-  Till The World Ends - Britney Spears

3- S&M - Rihanna

4- Firework - Katy Perry

5- Born This Way - Lady Gaga

Enjoy :D