High-quality MP3: http://www.contrebombarde.com/concerthall/music/412
This beautiful piece was composed for organ by Joel Martinson. The song highlights Cavaillé-Coll's Flûte Harmonique accompanied by warm strings and flutes 8', 4' under expression on the Récit. This piece is sometimes heard at the daily organ recitals on temple square.
Sheet music (c) 1994 Concordia Publishing House, St. Louis, MO.
Sheet music is available here: