Synthesizer V is a vocal synthesis software that allows users to create realistic singing voices using digital technology. It features a user-friendly interface where users can input melodies and lyrics, and the software generates vocal performances based on these inputs. The software supports various voice banks, which are recordings of different singers, enabling users to choose from a range of vocal styles and tones. Synthesizer V is popular among music producers, composers, and hobbyists for its versatility and ability to produce high-quality vocal tracks without the need for live singers.