Should I mix stems or master a track?
Choose the right starting point for separate instrument files or an already finished stereo mix.
In this guide
Choose Mix & master for separate parts #
Use Mix & master when you have separate audio files for vocals, drums, bass, guitars or other instruments and want Moozix to balance them together.
- Open Studio.
- Choose Start a mix.
- Upload the separate instrument files.
- Check the instrument labels, then choose Mix All.
- Listen, adjust if needed, then master the song.
Free sessions allow 16 stems; Pro allows 38. A stereo file counts as one track, not two.

Choose Master a track for a finished mix #
Use Master a track when the vocal/instrument balance is already in one stereo file.
- Choose Start a master.
- Upload one finished mix.
- Choose the mastering profile and loudness settings.
- Select Master track, then listen to the result.
Mastering applies to the whole mix. It does not expose separate guitar, bass or vocal controls inside a stereo file.
Avoid processing the same music twice #
Do not upload a full song alongside the stems that already make up that song. Do not include a drum-bus sum and all of the same individual drums unless you intentionally want both.
Choose one version of alternative exports. Doubling a part can make the result louder, muddy or phasey. If you only have a finished stereo file, choose mastering rather than pretending it is a collection of separate instruments.