Tops on iTunes

The top singles on iTunes for the week ending

Jan. 14.

1. "Thrift Shop," Ryan Lewis and Macklemore, featuring Wanz

2. "I Knew You Were Trouble," Taylor Swift

3. "Scream & Shout," will.i.am, featuring

Britney Spears, above

4. "Locked Out of Heaven," Bruno Mars

5. "Ho Hey," The Lumineers