‘There is an exception to copyright that permits people to use limited amounts of copyright material without the owner’s permission for the purpose of parody, caricature or pastiche.’

pastiche (n.) ‘a medley made up of fragments from different works,’ 1878, from French pastiche (18c.), from Italian pasticcio ‘medley, pastry cake,’ from Vulgar Latin pasticium ‘composed of paste’

‘A pastiche Mass is a Mass where the constituent movements are taken from different Mass settings – usually for concert performances.’ 

‘Is it clear now what we are driving at? What we are driving at is this: that with each performance we put on we are playing a serious game, that the whole point of our effort resides in this quality of seriousness.’