YouTube has unplugged most of its music videos from its UK website, after failing to agree a new licensing deal with the Performing Rights Society.
The society represents 60,000 songwriters and collects royalties on their behalf every time their music plays.
It wants YouTube, which is owned by Google, to pay more for music. Google says the rates are too high.
The Performing Rights Society says YouTube wants to make money at the expense of its members.