Ok, so if this really does convert technically speaking dryvox into vocal notes, how can one download/access ReaTune?
Reaper ships with the plug in, you don’t need to download it. To use it, follow the document I posted earlier. Keep in mind that audio to MIDI conversion is always sloppy, so you will need to do some heavy editing.
You are about to leave Rhythm Gaming World and access the external songs DB. While no song or file sold for commercially available videogames is hosted there and only fan generated content is allowed, Rhythm Gaming World has no direct control over the database and no files are hosted here. Alright, we had to made you aware of this, now you can visit the database!