An new version has ccome from Auto-Tune, the leading pitch correction software plugin from Antares. It's called Auto-Tune Evo, and it has a completely redesigned core technology, plus a new interface, and a simpler workflow. It shifts pitch real-time also, and checks for the formants to preserve the sound characteristics. It also models the mouth size of the singer, and you can even modify it, to control the tonal specs of the singer. The price is 400 USD, to know more click here please.