Something I hate is when songs end with a fade-out (if I use the word correctly: the song goes on but the volume is slowly reduced to zero): for me that means the composer just had no idea how to finish. Now, a lullaby would lend itself ideally for a fade-out. But John Lennon knows better (and he had the good sense to get Ringo Starr to sing it) -- here is Good Night from the White Album (03:10) [apparently with takes from the movie Baraka]:

_{*Lunatic*, n.
One whose delusions are out of fashion.}