It's the Cicadas!

No problem. I've been hearing Cicadas for 40 years...it's called Tinnitus.

With all the recent concerns about power surges and solar storms, I thought people might be on edge, listening for problems. So I decided to reassure everyone that their systems were okay if they hear that sound. Now, if you hear a low frequency hum, you may actually have a problem. 😏

@mashif If you hear a low frequency hum that might be the aliens landing. Look out your window. 😏

I’ve been at Chicago Symphony concerts at their summer home, Ravinia, where the Cicadas completely drowned out the Orchestra 

Mahler 123 . I live 10 minute from Ravinia. Yes once in a while you hear cicadas, birds and some insects. It does not bother me.Fortunate enough to appreciate the beauty of Ravinia. And Chicago botanical garden next to each other.One day Chicago Symphony orchestra were demonstrating a movie scoring on the screen. It’s really nice.