Angels' Work or The Choristers of St. Mark's: And Two Other Tales is a book written by John Henry Parker in 1848. The book is a collection of three short stories that revolve around the themes of faith, redemption, and the supernatural. The first story, Angels' Work, follows the life of a young boy named Walter who is orphaned and taken in by the choir of St. Mark's Cathedral. Through his experiences in the choir, Walter discovers the power of music...