The digital revolution has given new meaning to the phrase "fix it in the mix," which formerly meant that little pops and glitches could be glossed over or repaired after a recording was finished.

Once a solution for amateur, off-key singers on karaoke nights, Auto-Tune and other voice tuning software have progressed from the club to the recording studio but never beyond sounding artificial.

Vocal pitch correction software-maker, Antares, has taken the wraps off the next version of Auto-Tune, which adds several new features including enhancing the core technology. Dubbed Auto-Tune Evo, ...