Definition of pastiches:
(n) :
A work of art, drama, literature, music, or architecture that imitates the work of a previous artist, usually in a positive or neutral way.
(n) :
A musical medley, typically quoting other works.
(n) :
An incongruous mixture; a hodgepodge.
(n) :
(uncountable) A postmodern playwriting technique that fuses a variety of styles, genres, and story lines to create a new form.
(v) :
To create or compose in a mixture of styles.