After already parodying holders of high office in Pinafore, Patience and Trial by Jury, in Iolanthe Gilbert caricatures the British peerage, transferring the House of Lords to fairyland. The result was a new kind of féerie opera made more atmospheric by the use of electric light. Iolanthe was the first G&S work to be staged in the newly-built Savoy Theatre in 1882, and is one of the most musically integrated and fluent of the Savoy opera scores in its use and development of recurring musical themes.