Gilbert and Sullivan of these recordings have been reissued on CD. After the company was revived in 1988, it recorded seven of the operas. After the copyrights on the operas expired, numerous companies around the world released popular audio and video recordings of the operas. In 1966 and again in the 1980s, BBC Radio presented complete cycles of the thirteen extant Gilbert and Sullivan operas, with dialogue. Ad hoc casts of operatic singers conducted by Sir Malcolm Sargent in the 1950s and 60s and Sir Charles Mackerras in the 1990s have made audio sets of several Savoy operas, and in the 1980s Alexander
Gilbert and Sullivan noblemen who have gone astray. Sullivan, six years Gilbert's junior, composed the music, contributing memorable melodies that could convey both humour and pathos. Their operas have enjoyed broad and enduring international success and are still performed frequently throughout the English-speaking world. Gilbert and Sullivan introduced innovations in content and form that directly influenced the development of musical theatre through the 20th century. The operas have also influenced political discourse, literature, film and television and have been widely parodied and pastiched by humorists. Producer Richard D'Oyly Carte brought Gilbert and Sullivan together and nurtured their collaboration. He built the Savoy Theatre