Thaïs is an opera by Jules Massenet based on the novel Thaïs by Anatole France. Jules Massenet (1842 - 1912) was a French composer best known for his operas.
Thaïs takes place in Egypt during Byzantine rule, where a Cenobite monk, Athanaël, attempts to convert Thaïs, an Alexandrian courtesan and devotee of Venus, to Christianity. Its famous Méditation, the entr'acte for violin and orchestra played between the scenes of Act II, is an oft-performed concert music piece; it has been arranged for many different instruments.``