They are not two options for the same thing. "Royalty-free" describes how you pay: one fee, no ongoing royalties owed per play, per view or per broadcast. A sync licence is the permission itself: the contract that lets you put music together with your content. A royalty-free track is still licensed to you under some terms. The only question that ever matters is what those terms actually say.
What "royalty-free" really means
Historically, using music commercially meant paying royalties: a running obligation that scaled with how much the music was used. Royalty-free was the alternative, pay once, no ongoing meter. That is all the phrase promises. It is a billing model, not a scope of rights.
It also does not mean free of charge, and it does not mean unrestricted. Plenty of royalty-free licences carry hard limits on broadcast use, paid advertising, territory or redistribution. Plenty of creators find that out at the worst possible moment.
What a sync licence really means
A synchronisation licence is a contract that names four things: who is licensed, which track, for what use, and for how long and where. Everything follows from those. A well-drafted one tells you immediately whether you are covered for monetisation, whether you can run it as an ad, and whether it expires.
Terminology for all of this is in the glossary, perpetual, territory, non-exclusive, master versus publishing.
The clause almost nobody reads
Most large royalty-free libraries, Epidemic Sound and Artlist among them, run on a subscription. In exchange for a monthly fee you get a whole catalogue instead of one track, which is genuinely good value if you publish constantly.
The question to answer before you build a hundred-video back catalogue on one is: what happens to content I already published if I cancel? The answer varies by library and it is written in their terms, not in their marketing. Some continue to cover content published while you were subscribed. Some tie your rights to an active plan. Find the clause, read it, and decide with your eyes open. This is the single highest-stakes difference between renting a catalogue and buying a licence.
A per-track sync licence has no equivalent question. It is a one-off document with your name on it. On cadential. it is perpetual by default: there is nothing to cancel and nothing to renew.
Side by side
| Subscription library | Per-track sync licence | |
|---|---|---|
| You pay | Monthly or annually, ongoing | Once, per track per project |
| You get | Access to a catalogue while subscribed | A contract for a specific track |
| If you stop paying | Depends on their terms, read them | Nothing changes |
| Best when | High volume, many tracks per month | You want a specific track, or publish occasionally |
| The music | Often written to brief for the library | Released work by a named artist |
The part that is not about paperwork
Large libraries are large because the same catalogue is served to enormous numbers of creators. That is the point of the model, and it is why library music increasingly sounds like library music. It was commissioned to be inoffensive under a voiceover.
A direct licence from an independent artist is still non-exclusive; someone else can license the same track. But you are licensing an actual release by an actual artist with an actual audience, from a catalogue that is not distributed at library scale. And the money goes somewhere different: on cadential., 80% of every licence fee goes to the artist. That is not a moral argument, it is just a different structure, and for some creators it is the deciding one.
So which one
If you need forty tracks a month and any competent instrumental will do, a subscription is cheaper and faster, and you should use one. If you want a particular song, or you are making something that will outlive your subscription. A film, a brand campaign, a podcast back catalogue, buy the licence. Owning the permission outright is worth more than it costs.