The document discusses early English opera and its development. It describes key composers Henry Purcell, John Blow, and William D'Avenant and their contributions. Purcell is considered England's greatest composer. Blow taught Purcell and composed the first English opera, Venus and Adonis. D'Avenant was a playwright who collaborated with composers and wrote the earliest attempt at English opera, The Siege of Rhodes. The document also discusses pre-opera English masques and music in dramas.