LANDR

LANDR is best known for automatic mastering. You upload a finished stereo mix, the service analyzes it and returns a mastered version, and you can choose between styles and loudness levels before you download. It is aimed at artists who release often and want a consistent, fast master for demos, singles and content.

The same account also gives access to music distribution to streaming services, a sample library, plugins and collaboration tools, so some bands use it as one place to finish and release a track. An automatic master works best on a mix that is already balanced; it can't fix a muddy bass or a buried vocal. A good habit is to compare the result against a reference track at the same loudness, and to keep your unmastered mix so a human engineer can master it later if a song takes off.