Madonna and Taylor Swift perform ‘Ghosttown’ at iHeartRadio Music Awards 2015

The iHeartRadio Music Awards should be called the iHeartTaylorSwift Awards. The pop singer cleaned house at the show Sunday, winning artist of the year and song of the year for "Shake It Off," and even assisted Madonna by strumming her guitar onstage while the pop icon sang a new song. Surprise! Madonna and Taylor Swift performed together for the first time ever. Madonna sang her song “Ghosttown” while Taylor played guitar at the iHeartRadio Music Awards 2015.The 25-year-old pop star played the guitar to back up Madonna on her performance. What an awesome surprise collaboration!