Yesterday around noon Central time Nashville airport apparently experienced a complete failure of normal tower communications. I was casually listening when I realized the Tower controller was repeatedly checking in with flights asking, "How do you read me?" and stating that the Tower "had had a total communications failure and was operating with only one handheld". Does anyone have additional info on this situation? It was interesting to listen to ... and well handled, as it seems almost all "glitches" are with these expert and very professional controllers.