Some of the most defining songs for musical artists aren't written by them. In fact, some were successes for other artists before they were rerecorded. Find our picks for 10 songs you probably didn't realize were covers (and listen to the originals!).

We share our picks for some of the biggest — and most influential — fashion moments from Madonna’s storied music-video catalogue.

The GPCD Panelists share their favorite Madonna songs — including some deep cuts — in honor of the Material Mom’s birthday.