I have seen exactly one cicada and heard none.
See photo in post 89.
The worst was when they would congregate, maybe 40 or 50 of them, on the bedroom window screens around 2 or 3 A.M. Even with double-glazed windows closed and the air conditioning on, they would set up a megadecibel vibration that would involve the glass and wake the dead. I actually feared that the glass would shatter. And that's even before the cat would screech and "attack" the window, screechgrowling and fruitlessly clawing the glass. So glad they're almost gone now.