The sound of the first Purple Martin returning in spring. Means I'll be blessed with another year of those wonderful birds in my martin house. My parrots talking, jabbering & laughing. The sound of my DH returning from work. My dogs, who get excited if I'm out of their sight for a few minutes. All the sounds of spring, the bugs, birds. The wind howling thru the trees on a warm night. My furnace kicking on, means it's working & we won't be cold. Rain on the roof. There's so many, but the most important one is....I can hear :).