The Twilight Zone series, "The Outer Limits". Rod Serling sued the Marketts for quoting the four-note motif from "The Twilight Zone", without his approval, which resulted in the change of the title to ""Out of Limits"". It reached number 3 on the "Billboard" Hot 100 chart in 1964. It sold over one million copies, and was awarded a gold disc. Many other musicians have written and performed music based on the "Twilight Zone", including: 2 Unlimited ("Twilight Zone"), Anthrax ("Intro to Reality"), Average White Band, John Cale, Dr. John, David Dubowski ("To Serve Man"), Golden Earring ("Twilight Zone"), Michael Hurley, Tech N9ne, Iron
Twilight and evening twilight becomes nighttime. When the Sun again reaches 18° below the horizon, nighttime becomes morning twilight. Owing to its distinctive quality, primarily the absence of shadows and the appearance of objects silhouetted against the lit sky, twilight has long been popular with photographers, who sometimes refer to it as "sweet light", and painters, who often refer to it as the blue hour, after the French expression "l'heure bleue". Twilight should not be confused with auroras, which can have a similar appearance in the night sky at high latitudes. By analogy with evening twilight, the word "twilight" is also