Sleep is a beautifully illustrated children's book and the latest result of a collaboration between poet Charles Anthony Silvestri and composer Eric Whitacre . The text was originally written to accompany Whitacre 's enormously popular choral work Sleep . This hardcover book is a new way to enjoy and share the poem with lavish illustrations by Anne Horjus. Enjoy the book explore the music which inspired it and see the connections between words and art and music which are everywhere. Watch Eric Whitacre 's Sleep here: Sleep is a beautifully illustrated children's book and the latest result of a collaboration between poet Charles Anthony Silvestri and composer Eric Whitacre . The text was originally written to accompany Whitacre 's enormously popular choral work Sleep . This hardcover book is a new way to enjoy and share the poem with lavish illustrations by Anne Horjus. Enjoy the book explore the music which inspired it and see the connections between words and art and music which are everywhere. Watch Eric Whitacre 's Sleep here: