A synchronization, or sync, license grants the right to pair a musical composition with visual media — film, television, advertising, video games — and is typically negotiated separately from the master recording license needed to use the specific recorded performance of that composition. Because both the composition (owned by songwriters and publishers) and the master recording (owned by the artist or label) usually need separate clearance, sync disputes frequently involve one party discovering it obtained only one of the two required licenses, or that the license it obtained did not cover the actual use.

Common scope disputes include use in a medium, territory, or duration the license did not authorize, use beyond an agreed license term (a promotional sync that continues after the license expires), and disputes over whether a specific edited or excerpted version of the work fell within what was licensed. Unauthorized sync use is a frequent basis for copyright infringement claims layered on top of the contract dispute over the license's actual scope, since using a work outside a license's authorized terms functions as if no license existed for that use at all.

Juricratic models a sync dispute as requiring two coupled clearance checks — composition and master recording — since a use can be properly licensed on one side and unlicensed on the other, and treats scope questions (medium, territory, duration) as the recurring fact pattern most likely to determine the outcome.

Music supervisors, publishers, labels, and production companies rely on sync licensing analysis constantly during production and post-production, since clearing music properly for every intended use and territory is one of the most common sources of last-minute production risk. When a use turns out to exceed what was licensed, both a contract claim over the license terms and a separate copyright infringement claim can be available depending on the facts.