iTunes' top 10 selling singles and albums of the week ending Monday:

Singles:

1. "Fireflies," Owl City

2. "Need You Now," Lady Antebellum

3. "Replay," Iyaz

4. "Bad Romance," Lady Gaga

5. "Tik Tok," Ke$ha

6. "Empire State of Mind (feat. Alicia Keys)," Jay-Z

7. "Party in the USA," Miley Cyrus

8. "3," Britney Spears

9. "Whatcha Say," Jason DeRulo

10. "Russian Roulette," Rihanna

Albums:

1. "Before I Self Destruct," 50 cent

2. "Glee — The Music, Vol. 1," Glee Cast

3. "Play On," Carrie Underwood

4. "The Circle," Bon Jovi

5. "Attention Deficit," Wale

6. "Hello Hurricane," Switchfoot

7. "Memento Mori," Flyleaf

8. "Alter the Ending," Dashboard Confessional

9. "Ocean Eyes," Owl City

10. "Fearless," Taylor Swift