Right now, Mitton Usui's Friday Voice Log is doing a demonstration? of pitch correction software...

Right now, Mitton Usui's Friday Voice Log is doing a demonstration? of pitch correction software, and it's incredibly interesting. They're comparing his own live singing to the corrected audio. I had no idea you could fix it this much! As long as the pronunciation is solid, you can do pretty much anything. You can even adjust by semitones or use gradients! Amazing! Well, I won't be using it, though.