Utau

Utau is a free software that allows users to create and customize singing voices. It works by combining voice samples—recordings of a singer's voice—into a virtual singer that can perform songs with adjustable pitch, timing, and expression. Users can build their own voice banks or download existing ones, enabling them to produce vocal melodies and harmonies digitally. Utau is popular among music enthusiasts and producers for its flexibility in crafting unique vocal performances, making it an accessible tool for creating singing voices without needing a human singer.