George Frideric Handel’s opera Oreste of 1734 is a pasticcio, which is a work built around music (usually from a range of composers) that already exists. These were very common in the eighteenth century, partly because the demands on an establishment’s resident composer to produce work were so great that it became a standard practice to bolster output by utilising them, and partly because there was a strong tradition of using such creations to showcase the compositions of a...