My favorite sound on the Big Red Rooster White Noise Sound Machine is the sound of rain. On a rainy night I fall asleep so fast. So with this Sound Machine I just set it to rain and a couple of minutes later I am out. I never realized how much I needed one of these sound machines until now. No more tossing and turning to try to find a comfortable, just so I could fall asleep. [This review was collected as part of a promotion.]