Edward —, composer of 1900 oratorio The Dream of Gerontius (5)
I believe the answer is:
elgar
(Other definitions for elgar that I've seen before include "Glare at great English composer" , "Out of the strange glare comes an English composer" , "Glare critically at the British composer" , "Glare at composer of 'The Dream of Gerontius'" , "Enigma Variations composer" .)