Q&A for How to Use Auto Tune

Not exactly, but you can hook some mics up to a separate autotune processor that automatically tunes your voice as you sing.

Some people imitate the sound of autotune by allowing their voice to break, or shift quickly between chest and head voice, using a technique similar to yodeling.

There are several free autotune plugins available on the market, including MAuto Pitch, GSnap, and Graillon 2. Experiment with different free autotune options to find one that has the features you want!

Using Autotune live isn't too difficult. The fundamental keys are to have earphones or monitors which allow the singer to hear his voice pre-Auto Tune (or he will have no idea if he is even close to the right note) and using a computer powerful enough to process the sound without lag to avoid synch issues.

Yes! AutoTune is a new development in music. Singers have been recording songs without it for decades.

This depends on how much you tune. Match pitch as much as possible, and use auto tune for minor tweaking if absolutely necessary. It's obvious if you overdo it on the auto tune, as it will sound unnatural; if you ever have a live gig and the people don't hear what they heard on the recording, they will be very disappointed. Don't rely on auto tune, but on your talent.