Chart Attack

1.Shampoo - Pete Yorn & Scarlett Johansson
2.Tick Tock - Kesha
3.Who'd Have Known - Lily Allen
4.Crank It Up - Ashley Tisdale
5.3 - Britney Spears
6.Hotmess - Cobra Starship
7.Begin Again - Colbie Caillat
8.Automatic - Tokio Hotel
9.Starstrukk - 3OH!3 & Katy Perry
10.Won't Stop - One Republic
11.Earthquake - Little Boots
12.Superstar - Taylor Swift
13.No Way - Lady Gaga
14.Video Phone - Lady Gaga & Beyonce
15.Russian Roulette - Rihanna