Plain-English guides to audio stems, AI stem separation, and mixing parts from different songs together.
A beginner's guide to stems: what they are, how they differ from multitracks and masters, and what people use them for.
How a model can pull vocals, drums, and bass out of a finished song, and why the results are good but never perfect.
How to match tempo and key so parts from different tracks sound like they belong together.
Practical tips on source files, dense mixes, and mixer settings that reduce bleed and artifacts.
More guides: All guides · What are stems? · How AI separation works · BPM and key basics · Getting cleaner stems