Question: I need a secure and private online mastering tool that doesn't share my music with third parties, can you recommend one?

If you want an online mastering tool that's secure and private, with no sharing of your music with third parties, Diktatorial Suite is a top pick. This AI-based audio mastering tool is geared for audio pros, musicians and mastering engineers. It can master audio with text prompts, optimize music for streaming services like Spotify and Apple Music, and process music without sharing it with anyone else. The suite has advanced controls for stereo width, analog warmth and saturation, and you can make unlimited revisions. The suite is designed for pros, but it's not the most expensive option.

Another strong contender is Cryo Mix, an AI-based music mixing and mastering tool that boosts sound quality. It lets you upload instrumental and vocal files, tweak settings and add backing vocals. The service also has an AI Audio Separator that uses machine learning to isolate stems like vocals, drums and instruments from a single audio file. Cryo Mix uses industry-standard mastering processes, so it's a good option for those who want high-quality audio but don't want to share data.

If you want a broader suite of music production tools, check out WavTool. This web-based tool uses generative AI to help you work faster. It's got a multi-modal music chatbot, a MIDI continuation and variation tool, an audio generator, stem separation tool and cloud storage with automatic project backup. WavTool doesn't share your content and offers a range of pricing options so musicians can use it regardless of their budget.