Here are a few sleep inducing songs for #threetunetuesday by 
Any of the songs by Hammock will knock you out with their slow ambient music.
Tycho is another band that will put you out if you need to sleep. Sometimes it is also good to relax to if you are feeling anxious.
Slowdive is another band that makes lullaby music. They are more in the genre of shoegaze where everything becomes an ambient wash.
That's all for now, time for bed.