This feature is primarily available to creators in the YouTube Partner Program and currently varies by region. 2. Third-Party Music Licensing Platforms
Look for music under CC-BY (requires attribution) or CC0 (public domain) on sites like Free Music Archive . License tracks - YouTube Help
You will need to negotiate a Sync License (for the composition) and a Master License (for the specific recording).
Accessible via YouTube Studio, this offers thousands of free tracks and sound effects that require no license purchase.
Platforms like AudioJungle or Premium Beat allow you to buy individual licenses for specific tracks if you don't want a subscription. 3. Direct Negotiation