Again. In Eng. has been adopted as the word of demand for the repetition of a perf. (properly, perhaps, of the same piece, but often used of a return to the platform to give additional perf., either of the same or another piece). Also used as verb (to encore).
Although a Fr. word, encore entered the Eng. language as a corruption of It. ancora (with the same meaning), which, from the early 18th cent. onwards, was used by audiences at the It. Opera in London (together with the words altra volta, another time). The Fr. use bis (Lat., twice; verb bisser).