Tops on iTunes

The top singles on iTunes for the week ending

March 4.

1. "Thrift Shop,"

Ryan Lewis & Macklemore, featuring Wanz

2. "When I Was Your Man," Bruno Mars

3. "Harlem Shake," Baauer

4. "Heart Attack,"

Demi Lovato, above

5. "Stay," Rihanna,

featuring Mikky Ekko