YouTube is blocking some songs from popular artists a week before a licensing contract expires. This could be a negotiation tactic, a new report suggests.

Until YouTube and SESAC reach an agreement on renewal terms of their expiring contract, various songs are unplayable on the video streaming service.

YouTube has also suddenly stopped serving many popular tunes. Unfortunately, it seems as though this issue won't be rectified as easily. YouTube users in the U.S. received an unwelcome surprise this weekend,