pasticcio

A work or style produced by borrowing fragments, ingredients, or motifs from various sources; a potpourri.

A medley; a hotchpotch; a farrago; specifically, in music, an opera, cantata, or similar work made up of detached numbers from various works, even by different authors, but arranged as if intended to form a continuous dramatic work, a special libretto being usually written for the music; a medley, olio, ballad-opera, etc.

In painting, a picture painted in direct imitation of the style and manner of some other than the artist; also, such an imitation of style.

In decorative art, a copy of any design modified by the material or the purpose of the copy.

A medley; an olio.