Music that comes from a source present on or off screen and is not part of the dramatic underscore. This can be music coming from a band or a radio, for example.

A collection of tables of timings with one page for each individual tempo.

A sequence of metronomic beats used to synchronize music to film.

An individual  piece of music as used in the film.

 Sound whose source is visible on the screen or whose source is implied to be present by the action of the film. Source music.

 Sound whose source is neither visible on the screen nor has been implied to be present in the action. The underscore.

The conducting and performance of a cue without the aid of a click track.

Composing of film music without credit.

The precise synchronization of a musical accent to an on screen event. (Also “Dead hit”)

A musical accent or event synchronized to on a on screen event.