pastiche

noun

1 a pastiche of literary models and sources:

mixture, blend, medley, melange, miscellany, mixed bag, pot-pourri, mosaic, patchwork, mix, compound, composite, collection, motley collection, assortment, conglomeration, hotchpotch, hodgepodge, jumble, ragbag, mishmash, farrago, hash;

informal mash-up;

rare gallimaufry, olio, olla podrida, salmagundi, omnium gatherum, macédoine, motley.

2 the operetta is a pastiche of 18th century style:

imitation, parody, take-off;

rare pasticcio.

pastiche Oxford Dictionary of English