I can't sleep at night.
I can't sleep at night and I don't know why.
Toss and turn the whole night but just can't sleep at night.
I close my eyes I don't know why.  I can't sleep at night.
Can't count sheep they make me want to eat.
But I can't sleep at night.
I close the blind to keep out the moon. Because I know, it's not noon.
I can't sleep at night. Do you know why?  
Could it be I didn't turn the lights out!