Go to the Yamaha website. Sign up for an account. Download the 30-day free trial of the Vocaloid 6 Editor.
But here is the secret the industry doesn't always advertise: vocaloid voicebank free
The shimmering, synthesized vocals of Hatsune Miku, Kagamine Rin/Len, and Megurine Luka have taken the world by storm. For over a decade, the Vocaloid software has been the industry standard for producers looking to create realistic, anime-tinged singing voices without hiring a human vocalist. Go to the Yamaha website
However, there is a significant barrier to entry: the price tag. A full Vocaloid 6 editor and a single voicebank can easily cost over $200. For a teenager with a laptop and a dream, this can feel like an impossible hurdle. synthesized vocals of Hatsune Miku