4.1 Terms and Definitions

Musical Work

A Work intended to be perceivable as a combination of sounds, with or without accompanying text.

Any words that are intended to be expressed with a MusicalWork (often termed Lyrics) form part of that MusicalWork; not all MusicalWorks have Lyrics. A MusicalWork may be expressed and fixed to become part of a SoundRecording or a Video Recording, or may be used to create notated music (sheet music, scores, instrumental parts) or sound generation codes (such as MIDI files). In some cases, the MusicalWork comes into existence simultaneously with its expression. This is common in extemporised forms such as jazz music.

Sound Recording

An audible persistent manifestation of a subject (often but not necessarily of a performance).

For the purposes of this standard, Sound Recordings must be eligible for the allocation of an ISRC.


A digital fixation of an expression of an abstract Work (such as a sound recording, a video, an image, software or a passage of text). Resources are individual assets that make up a Release. Typical Resources are sound recordings, video clips and cover art images.

For the purposes of this standard, Resources are Sound Recordings and short form videos that are eligible for the allocation of an ISRC.

The link between a sound recording or video Resource and one or more Musical Work(s) in which a party asserts that the sound recording makes use of the Musical Work or Works.