The Antares Harmony Engine Evo vocal harmony software gives you the ability to craft incredible vocal harmonies - with an extraordinary amount of control! Generate four independent harmony voices, complete with humanization features. Antares throat-modeling technology is built-in, so you can process each harmony voice through a physical model of the human vocal tract. Harmony Engine Evo gives you faster and more accurate pitch detection and very natural-sounding results. You even get five channels of the awesome CHOIR vocal multiplier onboard Harmony Engine Evo!