The Melodyne key that was used for Studio One 2, 3, 4 and 5 Professional will transfer and be usable automatically with Studio One 6 Professional's integration with Celemony.To use Melodyne in Studio One 6, you MUST be upgraded to Melodyne 5.The following will guide you through installing and authorizing Celemony Melodyne. We have partnered with third-party software manufacturer Celemony to bring you one of the best tools for production work in the business.