YouTube Music Restrictions
Copyright holders decide if and how they want their music to be used on YouTube, so their copyright policy will affect whether and how your video is made available. If you use music with a policy of:
Monetize: The copyright holder has chosen to monetize this music, so ads may appear on your video. In some cases, the copyright holder may elect to share some of that revenue with you. Note that, even if this policy is applied, the video may not be available everywhere or on all devices.
Block worldwide: One or more copyright holders don't allow the use of this music on YouTube. If you use this music, your video may be muted or may be entirely unavailable on YouTube.
Block in some countries: One or more copyright holders have restricted the countries in which this music is available on YouTube. If you use this music, your video won't be viewable where the music is blocked on YouTube.
If you use music listed in the Music Policy Directory, you will receive a copyright claim notifying you that you used copyrighted content.
If you have one of these strikes on your video, you can Add or swap audio tracks to remove the copyrighted material, or avoid them altogether by using music and sound effects from YouTube's free audio library when creating your videos