Yamaha Corporation released today new AI Voicebank "AI Hibiki Koto".
AI Hibiki Koto is the virtual vocal voicebank based on voice of "Leon Tachibana" who is a Japanese singer.

This voice bank is optimized for VOCALOID6's AI technology and realizes unprecedented singing voice freedom with natural expression.Depending on your direction, you can create a variety of singing voices, from natural human-like singing voices to futuristic robot voices.

It is downloadable from this official VOCALOID SHOP.
*This is a Voicebank product and cannot be used stand-alone; separate editor software such as the VOCALOID6 Version 6.3.0 or higher is required.