A YouTube Mix is a nonstop playlist tailored to you. You can find YouTube Mixes:
- In search results
- In Home
- On Music cards
- In the Suggested section on certain watch pages
Enjoying the YouTube Mix you’re listening to? Add it to the "Playlists" section of your Library 
so you can easily listen to it again later.
so you can easily listen to it again later.On Computer
- At the top right of the Mix, click
.
.On Mobile
From the Home page:
- Tap More
.
- Tap Add to Library
.From the Mix page:
- Below the description, tap
.
.