On Instagram, Bob Clearmountain takes to video to accurately describe the difference between Multitracks vs Mixing Stems. He’s right. Stems (or mixing stems) are subgroups of tracks, typically a stereo track whereas Multitracks are individual tracks of a mix. It can be a tongue twister with all the “M’s” but think of “tracks” as individual channels/tracks and “stems” as groups of channels/tracks. I have made the mistake of saying “mix stems/mixing stems” as opposed to multitracks. Not the end of the world but it can be confusing when you want to know what you’re actually getting.