The new streaming service will come with "a reimagined mobile app" and desktop version - available for free with ads or for $9.99 without - as the company focuses on discovering new music.
Google has argued that YouTube Music's main advantage is combining all the official versions of songs with access to "thousands" of related remixes, covers, live cuts, playlists and videos.
Meanwhile, Google's own AI will also play into the exciting service, and it has been promised that the app will be able to discover songs by lyrics, or even a general description.
The app is set to be released on May 22.
The changes to YouTube come as the website's Red service has been renamed Premium, and made separate from the new Music app.
For $11.99, subscribers will get all of the above, with the addition of YouTube Originals, which Google has vowed to boost with even more of a selection of original series and movies.
Existing Red subscribers will not have to pay the new higher price for Premium, and in countries where Red is already available (including United States, Australia, New Zealand, Mexico, and South Korea) users can sign up now, before it officially rolls out.
Meanwhile, more countries will be added when the new service is launched, including Austria, Canada, Denmark, Finland, France, Germany, Ireland, Italy, Norway, Russia, Spain, Sweden, Switzerland and the UK.