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I am a Vocaloid user who has both Vocaloid 3 and 4 for Cubase. Vocaloid is complicated for new users, and somewhat intimidating when one first starts out. However, it has many adjustment options, and although it takes a while to become proficient at "tuning" (editing) the voice, it's quite enjoyable. It should be noted that the editor and the voices must be purchased SEPARATELY, which leads to quite a high cost.