OFFICIAL PAGE: Sequoia 15
Sequoia 15, from MAGIX Software GmbH, is a full-featured digital audio workstation for recording, mixing, post-production, and mastering. Sequoia 15 includes a Spectral Cleaning feature for editing audio content. A full version of SpectraLayers Pro 5 is now included with Sequoia 15! Sequoia 15 is available only for Windows (32 bit or 64 bit).
Screenshot courtesy of MAGIX