What are the top 10 songs of 2009?

The top 10 songs of 2009, according to Billboard's Year-End Hot 100 chart, are:

1. "Boom Boom Pow" by the Black Eyed Peas

2. "Right Round" by Flo Rida featuring Kesha

3. "Poker Face" by Lady Gaga

4. "I Gotta Feeling" by the Black Eyed Peas

5. "Single Ladies (Put a Ring on It)" by Beyoncé

6. "My Life Would Suck Without You" by Kelly Clarkson

7. "Down" by Jay Sean featuring Lil Wayne

8. "Gives You Hell" by the All-American Rejects

9. "Fireflies" by Owl City

10. "You Belong with Me" by Taylor Swift