As you know on Windows Phone 8 on the Music+Videos app,a history will be created when you listen to a music or watch a video. So now im gonna teach you how to remove and delete them.
Download WP Tool .http://www.windowsphone.com/s?appid=d1b645fb-ba11-4b9c-abed-d349a227a7d6
Free and easy to use. Tap “clear music control” to remove the topbar and tap “clear history” to remove the history. After that it will pop up “History Cleared” after a few seconds and its done.
Check out my other article to free up some memory on Windows Phone 8 with another app.