My new car has an automatic locking-unlocking remote control device that honks whenever you press it, or whenever the thing gets stuck in your pocket. I'm not sure what key it is, but chanteyranger has just favored me with opinion that it was a chihuahua in a previous life.

On another note (tee hee), singer-songwriter Michael Smith used to tune his guitar to the Miami telephone dial tone, which he said was D.