Julie Andrews knew what she was doing

One of my many "should get around to doing" tasks is to acquire perfect pitch, and in a fit of optimism, I find Good-ear.

A couple of hours of listening to pinging piano noises later, I'm getting quite good at it. So I go to the toilet, and when a drip of water hits the sink, I hear a distinct A sound. When I rap with my knuckle, the door makes an F.

It's all extremely weird. Like one of those Star Trek episodes where they discover that strange out-of-phase beings have been walking around on the bridge without anyone noticing. Perhaps I should give up this analogy before I sound too much like a geek.