Copyright FAQ for AI-Separated Stems
Separating a song you do not own does not clear it. A commercial remix or a sample pack made from those stems needs a license. This is general information, not legal advice.
Overview
Copyright rules differ by country. Nothing on this page is legal advice, a clearance, or a promise that a use is fair use. If you plan to release, sell, or sync a remix or a sample pack, ask a music lawyer or a clearance service before you ship it.
MixMaster Pro's terms are narrower than copyright law and easier to state: you may only upload audio you have the rights to process. Uploading a file does not give you ownership of it. The company does not check ownership and does not grant you a license in someone else's recording. See the Terms of Service.
MixMaster Pro is the living Mix Intelligence platform for producers. Analyses stay in your Mix Library, revisions compare on the same mix, references save to your account, and Maya on Pro+ coaches from your bound report - connected workflows instead of one-time uploads.
Related topics
A record has two copyrights
The composition is the song: melody, lyrics, and harmony. It is usually controlled by publishers and songwriters. The sound recording (the master) is the particular recorded performance, usually controlled by a label or the artist who paid for the session. An AI stem split is a copy and an adaptation of the master. Using a melody from it can also use the composition.
- Buying a download or a stream is a license to listen. It is not a license to extract stems and resell them.
- Separating your own session is different. If you own or already licensed both the master and the composition, the stems stay inside that license.
- A beat lease, a sample pack license, or a remix contest has its own rules. Read that license. Stem separation does not widen it.
Commercial remixes and sample packs
If the stems will ship - a remix for sale, a playlist pitch, a sync, or a sample pack other people can buy - plan on clearing the master and the composition. "The model made the stem" is not a new copyright owner and not a substitute for a license.
- A commercial remix of someone else's record needs permission from the master owner and, if you use the song, the composition owner.
- A sample pack of extracted vocals, drums, or loops from records you do not own is a commercial copy of those masters. Private practice files are not the same act as selling the pack.
- Crediting the artist, or writing "royalty free" in a product description, does not clear the recording.
- Official stems, remix contests, and licensed sample libraries already state what you may do. Prefer those when the release is public.
What this FAQ will not decide
- Whether a particular clip is fair use or fair dealing. That is fact-specific, and a commercial sample pack is a weak candidate.
- Cover-song mechanical licenses. A cover you re-recorded is not the same as a stem pulled from the original master.
- What a platform's content ID system will do. A claim can arrive even when you believe the use is allowed.
- Territory. A use that is tolerated in one country can be infringement in another.
Key takeaways
- You need rights in the file before you upload it. MixMaster Pro does not grant those rights.
- A commercial remix or sample pack made from someone else's master needs a license.
- This page is not legal advice.
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