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License Modifiers

Modifiers add requirements or restrictions on top of a base license tier. They’re optional — a tier can stand alone (e.g., FM:Remix with no modifiers is valid). When multiple modifiers are present, they always appear in this fixed order:

Credit → Royalty(n%) → ShareAlike → NoAI


Attribution required. The derivative work must credit the original creator.

How credit appears depends on the context — liner notes for a release, description for a stream, tracklist for a DJ set. FreeMix handles attribution automatically through the remix tree and attribution chains on the platform.

Key rules:

  • Attribution must include the artist name and original track title at minimum
  • Credit cascades through the full remix chain — if the original license includes Credit, every downstream derivative must attribute the original creator, no matter how deep the chain goes
  • Credit flows downstream from the point it was introduced, not retroactively upstream. If Artist A releases without Credit, and Producer B remixes it adding Credit, Producer C (remixing B) must credit B but has no obligation to credit A

Revenue share. The original creator receives a specified percentage of gross revenue from commercial sales of derivatives.

  • The percentage is set by the creator (1%–50% range) and is immutable once set
  • Royalties are calculated on the gross sale price before deductions
  • Royalties only apply when money changes hands — free distribution incurs no obligation
  • Incompatible with FM:NC (no sales = no royalties)
  • Not available with FM:Samples. Samples are a bare tier and carry no royalty in any form
  • Not available with FM:DJ (no source redistribution = nothing to cascade from)

Royalties flow through the entire remix tree using the halving rule. Each level in the chain can set a maximum royalty rate equal to 50% of the rate set by the creator directly above them.

Example: Artist A sets 20% royalty.

CreatorMax RateOn a $10 SaleSeller Keeps
A (original)20% (their choice)$2.00$8.00
B (remix of A)10% (half of 20%)$0.80$7.20
C (remix of B)5% (half of 10%)$0.36$6.84
D (remix of C)2.5% (half of 5%)$0.17$6.67
E (seller)keeps $6.67

The halving rule ensures royalties converge naturally — no hard cap needed. Each creator can set any rate up to their maximum, and the series always adds up to less than 100%.


Viral, and it reaches off-platform. ShareAlike is a lock on derivatives of this work: any remix, edit, or mashup must also carry a FreeMix license. You can add it even if the track you built on didn’t carry it — the lock can begin anywhere in the tree, and no one downstream can remove it.

  • Direction of travel: derivatives can tighten these terms, never loosen them. The derivative must carry the same tier or a more restrictive one, and must preserve ShareAlike itself.
  • The off-platform half: the FreeMix-license requirement is the one term that reaches beyond FreeMix’s own systems — it keeps a downstream work licensed even when it’s released elsewhere, like Bandcamp or SoundCloud. Enforced by the license terms, not a technical lockout.
  • What carries down the chain: NoAI is preserved when it travels with ShareAlike. Credit cascades on its own, with or without ShareAlike. Royalty is not preserved — it is halved at each generation under the halving rule.
  • ShareAlike With Stems goes one step further: remixes must also share their stems. Those stems seed new works, which share their stems in turn — ShareAlike is a forward ratchet, and the stems layer makes it a cycle.

Tier restrictiveness order (least to most): FM:Open → FM:Remix → FM:Stems / FM:DJ → FM:Samples → FM:NC

A derivative of an FM:Remix · ShareAlike track must be at least FM:Remix or more restrictive (FM:Stems, FM:DJ, FM:Samples, or FM:NC).


No machine learning training. The licensed material may not be used as training data for generative AI models.

What NoAI restricts:

  • Using the audio as training data for AI music generation models
  • Feeding stems or samples into AI training datasets
  • Any automated content synthesis from the audio

What NoAI does NOT restrict:

  • AI-assisted production tools used by humans (AI mastering, stem separation, pitch correction)
  • AI-powered search and recommendation of NoAI tracks (metadata use, not audio training)
  • A human producer using AI tools as part of their creative process

The distinction is between AI as a tool in human hands (fine) and AI consuming your audio as training data (not fine with NoAI).


Not all modifiers work with all tiers.

Modifier FM:OPEN FM:REMIX FM:NC FM:STEMS FM:DJ FM:SAMPLES
CreditYesYesYesYes
RoyaltyYesYes
ShareAlikeYesYesYes
NoAIYesYesYesYes

FM:OPEN and FM:SAMPLES are the two bare tiers — they accept no modifiers and always stand alone.

FM:NC is incompatible with Royalty — no sales means no royalties.

FM:DJ is incompatible with Royalty and ShareAlike. It forbids source redistribution, so there are no derivatives for ShareAlike to attach to and nothing for royalties to cascade from.