Asking as a person who doesn't discuss Arabic: Googling هذه ليلة وألف ليلة presents me the book "1001 nights" Because of this. Is there a chance that what he sings is "This is 1001 evenings"? As the chorus unfolds, the phrase “je vois la vie en rose” is recurring, https://youtu.be/s6N-NE8wXos