An encore is an additional performance added to the end of a concert, from the French "encore", which means "again", "some more"; multiple encores are not uncommon. Encores originated spontaneously, when audiences would continue to applaud and demand additional performance from the artist after the concert had ended。

安可，來源于法語詞encore，意為“再一次、再來點兒”，指演唱會或演奏會結束時額外增加的表演。多次安可返場的情況也很常見。安可最初是自發行為引出的，演唱會或演奏會結束后，觀眾都會持續鼓掌并要求藝人追加表演一些節目。

In some modern circumstances, encores have come to be expected, and artists often plan their encores. Traditionally, in a concert that has a printed set list for the audience, encores are not listed, even when they are planned。

到了現在，安可已經成為大家期待的一個環節，藝人也會提前計劃好安可階段的表演。不過，按照慣例來講，就算提前有安排，安可曲目也不會出現在演唱會或演奏會的節目單上。