Acclaimed British composer Max Richter has made history with a ground-breaking piece of work: his new work, "SLEEP," is an eight-hour lullaby. An exploration of music, consciousness and human connectivity, the work is intended to be listened to while sleeping. The landmark work is played on piano, strings, with subtle electronic touches and vocals - but no words. Previously released digitally, the full eight-hour worked is released on CD and high definition Blu-Ray audio.