Hailed at its introduction as a 'holy grail of recording,' by Recording magazine (and adopted worldwide as the largest-selling audio plug-in of all time), Auto-Tune corrects intonation and timing problems in vocals or solo instruments, without distortion or artifacts, while preserving all of the expressive nuance of the original performance - with audio quality so pristine that the only difference between what goes in and what comes out is the intonation and timing. All with a user-interface that is a model of clarity, speed and ease-of-use.