According to the Internet source given below, John Milford Rutter is an English composer, conductor, editor, arranger, and record producer, mainly of choral music born in London.
He studied music at Clare College, Cambridge and later founded his own choir, the The Cambridge Singers, which he conducts.
He is the composer of Open thou mine eyes (Öffne meine Augen).

Websites:
	John Rutter	Biography by wikipedia.org.