It seemed that you could bend audio just like chewing gum, and the processing artifacts remained amazingly small. You could even make new melodies out of existing material, while rhythmic loops could be tempo-shifted over a wide range and freely played melodies forced to fit an existing tempo. Notes could be pitch-corrected, lengthened and dragged to completely new pitches (by more than an octave), while their phrasing and vibrato could be adjusted. We saw demos of audio recordings where the individual notes were shown as waveforms on a piano-roll-type grid depicting actual pitches and where pitch-bends and vibratos were shown by a 'bendy thread' running through the waveform. Whole musical phrases could be time-stretched and single notes could be extended seemingly indefinitely.
Melodyne attracted a lot of positive press when it was first unveiled, promising as it did the ability to modify audio in the time, pitch and formant domains with minimal processing artifacts.
Version 2 of Celemony's revolutionary pitch- and tempo-shifting software includes new features, better sequencer integration and an improved interface.