Harmony Engine is a real-time harmony generating plug-in that lets you produce professional quality harmony arrangements from a single vocal or monophonic instrument track. Whether you’re an experienced arranger, a songwriter looking for the perfect backup vocal, or a producer experimenting with unique effects, Harmony Engine gives you new ways to create the harmony parts you hear in your head. It offers a variety of control modes, from fully automatic to individual control of every note. Harmony Engine features four high-quality harmony voices with independently adjustable vocal character, vibrato, and pan settings for realistic or extreme effects. And five channels of our Choir vocal multiplier lets you turn each harmony voice into 2, 4, 8, or 16 individual unison voices. Harmony Engine provides all the tools you need to produce lush and convincing harmonies. Meticulously craft your own vocal arrangement note-by-note, perform your harmonies with your MIDI controller, or simply choose the chords and let Harmony Engine do the rest. Harmony engine is also compatible with the Auto-Key plug-in (sold separately). Auto-Key is designed to save you countless hours in the studio by automatically detecting the key and scale of your music, and sending that information to Harmony Engine with a single click. With four independent harmony voices, a variety of flexible harmony generating modes, and humanization features for more natural sounding performances, Harmony Engine gives you the tools you need to produce any vocal arrangement you can imagine.