Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Semele (HWV 58) is a 1744 opera, or oratorio, in three acts by George Frideric Handel, based on the classical myth of Semele, mother of Dionysus. In the early 1740s, oratorios at the Theatre Royal, Covent Garden, were George Frideric Handel s chief concert activity in London. His biblical oratorios Israel in Egypt (written 1738), Messiah (1741), Samson (1743) among them bore some relationship to Greek tragedy, and unsurprisingly he decided to venture into the world of classical drama. He took up William Congreve's libretto for the 1707 John Eccles opera Semele, writing the music over a one-month period (from June 3 to July 4) in 1743.