4.2 Credit
For those who use the official AI singer in their song, please credit the AI singers and make a clear statement that the vocal is synthesized by AI.
For those who use the custom singers in their song, no credit is needed. But you also need to make a clear statement that the vocal is synthesized by AI.
How to credit every official AI singer is displayed on the home page of the licensing webpage. You can visit the licensing webpage by clicking the license tag. There might be some special credit requirements for different singers in diffrent comercial senarios. Please do make an effort to meet them.