A music cue is a signal or indication given to musicians during a performance to inform them of an upcoming change in the music, such as a change in tempo, key, or section.

In a live performance, a music cue can be given by the conductor, who will typically use hand gestures or other physical cues to indicate to the musicians when a change is coming up. In a recording session or in film or television scoring, a music cue may be provided by the composer or music director, who will typically use a visual or audio signal to indicate when a change is needed.

Music cues are important for ensuring that the musicians are all playing together and following the same musical interpretation. They help to keep the performance organized and cohesive and can be especially important in complex pieces of music with multiple sections or changes in tempo or key.