Tune listens to the vocal and guides it to the right notes in the key you choose. Retune Speed at zero gives the hard effect known from rap and trap; higher values give correction nobody will hear. Humanize lets long notes breathe naturally, Flex-Tune leaves notes that are already in tune alone, and Natural Vibrato lets you tame or boost your own vibrato. Formants stay in place even when transposing by an octave — the voice won't turn into a chipmunk unless you want it to. The live graph shows what you sing and how it sounds after correction. You can also feed target notes from a MIDI keyboard.