Here is the top 10 songs for 2009 (not my pick)
1
Fireflies
Owl City

2
Bad Romance
Lady GaGa

3
I Gotta Feeling
Black Eyed Peas

4
Whatcha Say
Jason Derulo

5
TiK ToK
Ke$ha

6
Meet Me Halfway
Black Eyed Peas

7
Need You Now
Lady Antebellum

8
Party In The U.S.A.
Miley Cyrus

9
Replay
Iyaz

10
Empire State Of Mind
Jay-Z + Alicia Keys