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
New York Gilbert and Sullivan Players to each of the 5th and 6th grade classes in the school district, to acquaint the students with some of the material and any special concepts they may need to understand (such as "apprenticeship" in "The Pirates of Penzance" or the British class structure in "H.M.S. Pinafore"). Sometimes the children also travel to New York City to see a full-scale NYGASP production. New York Gilbert and Sullivan Players New York Gilbert and Sullivan Players (often known as NYGASP) is a professional repertory theatre company, based in New York City that has specialized in the comic operas of Gilbert and Sullivan