Paul Halley (1952-) is an English organist, pianist, singer, composer, and choral conductor. He is well known for being a member and composer of the Paul Winter Consort.
From 1977-1989 Paul Halley was the organist and choirmaster at the Cathedral of St. John the Divine in New York. In 1982 Paul Halley recorded a series of organ improvisations on the organ at St. John the Divine on an album entitled Nightwatch. Here is one of those improvisations entitled Dusk/Sunset. The improvisation is based on the hymn tune Picardy. I hope that you enjoy it.