From Sleep

Max Richter will drop his latest album, an eight-hour piece called SLEEP, on September 4th.
Richter is a modern classical composer known for his straightforward and often highly emotional melodies, a style exhibited on well-known records like The Blue Notebooks and 24 Postcards In Full Colour. This latest one is a bit different, however—it's a single eight-hour composition that Richter calls his "personal lullaby for a frenetic world," and it's meant to be listened to while sleeping.
For SLEEP, Richter worked with a neuroscientist to figure out how music could function while the mind was in a deep slumber. He'll debut the piece at a concert in Berlin in September, which will run from midnight until 8 AM and where beds will be provided for the audience. The album will see release through Deutsche Grammophon, and it'll come on digital as well as CD and vinyl—the latter two formats will contain an abridged one-hour version that Richter says is "a series of windows opening into the big piece."
"It's really an experiment to try and understand how we experience music in different states of consciousness," he adds. "Sleeping is one of the most important things we all do. We spend a third of our lives asleep and it's always been one of my favourite things, ever since I was a child."