The history of the encore
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The encore began as a genuinely spontaneous audience request, calling a performer back for an additional piece they had particularly enjoyed, rather than as the planned, expected finale that most modern audiences have come to anticipate as a near guaranteed part of any full length concert program today.
Over time, performers began to plan for this expected moment deliberately, holding back a well known or crowd pleasing piece specifically for the encore rather than including it in the main set itself. This shift turned a once spontaneous audience gesture into a structured, anticipated part of the show.
Today's encore, usually a brief return to the stage after a deliberate short pause, functions as much as ritual as it does spontaneous request. Audiences expect it, performers plan around it, and the brief pause itself has become part of the shared, familiar rhythm of attending a live show. It is a small piece of theatre in its own right, and audiences would likely notice its absence.