I recently read a post about someone saying that they liked to play a certain type of music for their chickens, and the chickens loved it. They said that the chickens would just lay around while it played. I'll see if I can find it for you.
I was thinking the same thing as @rosemarythyme. It is very cute, but maybe you could turn off the lights before you go to bed? Have you monitored to see how they sleep at night?