What power art thou (King Arthur)

Henry Purcell was an English composer and organist of the middle Baroque era. He was extremely prolific, having composed more than 100 songs, a tragic opera Dido and Aeneas, and wrote incidental music to a version of Shakespeare's A Midsummer Night's Dream called The Fairy Queen. Purcell's musical style was uniquely English, although it incorporated Italian and French elements. Purcell is generally considered to be one of the greatest English composers.