An engrossing history of the music of twilight and sleep, from the nocturnes of Field and Chopin to Max Richter In an insomniac age, ambient and sleep music have become increasingly popular. But our association between music and sleep is not new: lullabies may be the oldest form of music, and are instantly recognisable across peoples and cultures. Why does the night hold such musical fascination for us, and what forms do its sounds take? Susan Tomes explores the story of the nocturne, and the music of nighttime in the classical tradition. From John Field's pioneering, lyrical nocturnes composed in the haunting atmosphere of St Petersburg's midnight sun, to Chopin's emotionally complex mastery of the form, composers and musicians have endlessly produced music about the night, in which the piano plays a central part. Tomes offers us a rich cultural history of this expressive, often melancholic, fascinating genre-which has gone on to inspire not just musicians but generations of artists and writers.