The complete operas of Gilbert and Sullivan

"This brand new 20th anniversary edition includes Thespis, Gilbert and Sullivan's first collaboration which is now being increasingly performed, despite the loss of the vocal and orchestral scores. It also features a completely new introduction, reflecting on the state of Gilbert and Sullivan nearly 150 years after the pair began their legendary collaboration, and new annotations addressing recent performance history, newly discovered 'lost' songs and dialogue, and, for the first time, Gilbert and Sullivan references in contemporary popular culture." -- Amazon.com.