CODA

[noun] [C] [specialized] - a piece of music that ends a longer piece of music and which is usually separate from the basic structureThe coda is often more technically difficult than the rest of the piece.Her real skill on the piano was evident in the difficult coda.(figurative) The exhibition contains a number of paintings in a coda to (= as a separate and additional part of) the main show, works that have been attributed to Rembrandt at some time but were not in fact done by him.