Autotune 7

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.
And now, with its new-from-the-ground-up time manipulation capabilities, Auto-Tune 7 represents the most substantial advancement in functionality since Auto-Tune's original introduction in 1997.
For most common pitch problems, Auto-Tune 7's Automatic Mode instantaneously detects the pitch of the input, identifies the closest pitch in a user-specified scale (including minor, major, chromatic and 26 historical and microtonal scales), and corrects the input pitch to match the scale pitch. A Retune Speed control lets you match the retune rate to virtually any performance style as well as create the iconic Auto-Tune Vocal Effect.
For meticulous pitch and time editing, Auto-Tune 7's Graphical Mode displays the performance's detected pitch envelope and allows you to modify pitch and timing with a variety of easy-to-use graphics tools. This mode gives complete control over the correction or modification of the most elaborate pitch and rhythmic gestures.
Auto-Tune is used daily by thousands of audio professionals around the world. Whether to save studio and editing time, ease the frustration of endless retakes, save that otherwise once-in-a-lifetime performance, or create the Auto-Tune Vocal Effect, Auto-Tune is the overwhelming tool of choice.