YouTube set to launch new ad-free music streaming service

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YouTube announced a new music streaming service today that will give users access to ad-free music videos, playable without an internet connection for the first time.

Called YouTube Music Key, the new service will cost £9.99 a month, and although there is no set launch date for a full version, a trial goes live today.

At the announcement in London, YouTube said it had become "the biggest music service on the planet".