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 group formed in 1901 in Philadelphia, continues to perform today. In 1948, "Life" magazine reported that about 5,000 performances of Gilbert and Sullivan operas were given annually in the US, exceeding the number of performances of Shakespeare plays. After the copyrights on the operas expired, other professional companies were free to perform and record the operas. Many performing companies arose to produce the works, such as Gilbert and Sullivan for All in Britain and Light Opera Works in the U.S., and existing companies, such as English National Opera, Carl Rosa Opera Company and Australian Opera, added Gilbert and Sullivan to