So I don't use this too often anymore because I typically put on a full album from Fleet Foxes, The National or Destroyer or something before I sleep. However, if I am in too deep a thinking mood to digest a full album, this year old playlist of songs hits the spot and soothes the soul enough for me to catch some sleep.
godspeed you black emperor- f#a#infinity
aesop rock- labor days
bright eyes- fevers and mirrors
radiohead- kid a, amnesiac, and in rainbows
the smashing pumpkins- adore
pink floyd- dark side of the moon
dj shadow- endtroducing