Overview
(or , ; and , , and ) means 'between the acts'. It can mean a pause between two parts of a stage production, synonymous to an intermission (this is nowadays the more common meaning in French), but it more often (in English) indicates a piece of music performed between acts of a theatrical production.
In the case of stage musicals, the serves as the overture of act 2 (and sometimes acts 3 and 4, as in Carmen). In films that were meant to be shown with an intermission, there was frequently a specially recorded on the soundtrack between the first and second half of the film, although this practice eventually died out.
Origin
Originally entr'actes resulted from stage curtains being closed for set or costume changes: to fill time as not to halt the dramatic action, to make a transition from the mood of one act to the next, or to prevent the public from becoming restless. In front of the closed curtains, the action could be continued during these entr'actes, albeit involving only players with no scenery other than the curtain, and a minimum of props.
An entr'acte can take the action from one part of a large-scale drama to the next by completing the missing links. The Spanish Sainete often performed a similar function.
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