the interlude between two acts of a play
a brief show (music or dance etc) performed between the sections of another performance
an instrumental piece performed between acts of a play or opera
The music between acts of an opera or play.
An "overture" to begin the second part or act of a performance. Often used now to describe any interval music.
a musical composition played between acts or between scenes within an act of an opera.
The music played at the beginning of the second act of a musical, before the action resumes. Often just another version of the Overture or one of the songs in the show played by the orchestra in the pit, though occasionally it goes beyond that, as in the "Life Is Like a Train" number from On the Twentieth Century. The entr'acte of Cabaret has all the sleazy musicians from the Kit Kat Klub bunched together on the catwalk, playing a jazzy version of "Two Ladies" and jamming individually, which is outrageously cool