The chorus in Murder in the Cathedral functions in almost exactly the same way as a Greek Chorus: commenting on the deeds of the characters and interpreting the significance of events within the play for the audience.
Inthe Greek drama, Chorus is a group of singers or chanters.In Greek , the essential action of the play, the operation of the deity in human life , is reavealed chiefly through the chores;it would be slight exaggeration to say that the episodes are mainly illustrations in action of the pattern of divine purpose thus revealed.
T.S. Eliot used chorus as a device to open out the action into its full significance.It mediates between the action and the audiance.
'In Mrder in the Cathedral' T.S. Eliot has widened the scope of chorus in the light of Christian liturgy and means of religious instruction. The Chorus make the audiance cherish the very idea of killing Thomas Becket by making him a martyrdom. It primarly instructs the readers the meaning of martyrdom and the extension of the liturgy and it also invites the readers to celebrate the act of martyrdom in as a token of God's Grace.Infact the chorus strengthens the dramatic power and conceals the defects of Eliot's theotrical technique.The chorus appears six times in the play.It helps to identify and understand the mind and art of the artist.The chorus only pronuounces Christian martyrdom and futility of life and waiting.
" The real drama of the play " says Helen Gardner," is to be foundin fact, where the greatest poetry lies- in the choruses- the change which is the life of drama - is there from the terror of the supernatural, expresses at the opening, in the rapturous recognition of the glory, displayed in all the creation of the earth, in the last."