For the week ending March 21, 2011: 
Top Singles: 1. "E.T. (feat. Kanye West)," Katy Perry
2. "Loser Like Me (Glee Cast Version)," Glee Cast
3. "Just Can't Get Enough," Black Eyed Peas
4. "S&M," Rihanna
5. "Get It Right (Glee Cast Version)," Glee Cast 6. "Born This Way," Lady GaGa
7. "Look At Me Now (feat. Lil Wayne & Busta Rhymes)," Chris Brown
8. "On the Floor (feat. Pitbull)," Jennifer Lopez
9. "Forget You," Cee Lo Green
10. "Blow," Ke$haTop Albums: 1. "Endgame," Rise Against
2. "21," Adele
3. "Lasers," Lupe Fiasco
4. "Sigh No More," Mumford & Sons
5. "Glee: The Music, Vol. 5," Glee Cast
6. "Give the Drummer Some," Travis Barker
7. "Loud," Rihanna
8. "My World 2.0," Justin Bieber
9. "Goodbye Lullaby," Avril Lavigne
10. "Late Nights & Early Mornings," Marsha Ambrosius
Top Singles: 1. "E.T. (feat. Kanye West)," Katy Perry2. "Loser Like Me (Glee Cast Version)," Glee Cast
3. "Just Can't Get Enough," Black Eyed Peas
4. "S&M," Rihanna
5. "Get It Right (Glee Cast Version)," Glee Cast 6. "Born This Way," Lady GaGa
7. "Look At Me Now (feat. Lil Wayne & Busta Rhymes)," Chris Brown
8. "On the Floor (feat. Pitbull)," Jennifer Lopez
9. "Forget You," Cee Lo Green
10. "Blow," Ke$haTop Albums: 1. "Endgame," Rise Against
2. "21," Adele
3. "Lasers," Lupe Fiasco
4. "Sigh No More," Mumford & Sons
5. "Glee: The Music, Vol. 5," Glee Cast
6. "Give the Drummer Some," Travis Barker
7. "Loud," Rihanna
8. "My World 2.0," Justin Bieber
9. "Goodbye Lullaby," Avril Lavigne
10. "Late Nights & Early Mornings," Marsha Ambrosius
