The iTunes' top five selling singles and albums for the week ending Jan. 3:

Singles:

1. "Grenade," Bruno Mars

2. "Firework," Katy Perry

3. "Tonight (feat. Ludacris & DJ Frank E)," Enrique Iglesias

4. "The Time (Dirty Bit)," Black Eyed Peas

5. "Black and Yellow," Wiz Khalifa

***

Albums:

1. "Country Strong (Original Motion Picture Soundtrack)," Various Artists

2. "Brothers," The Black Keys

3. "TRON: Legacy," Daft Punk

4. "Sigh No More," Mumford & Sons

5. "My Beautiful Dark Twisted Fantasy," Kanye West

-- Associated Press