Musicomedical nerdery

Here's an item for those of you who are fortunate enough to be nerds in the fields of both music and medicine. I recently pulled out my old violin to amuse myself with some bluegrass. I don't have anyone to play with at the moment, so I was playing along with recordings and needed to be able to tune my fiddle to a real pitch. (Sadly, my once excellent sense -- if I do say so myself -- of relative pitch has faded with years of disuse.) However, I don't have any other instruments with me at the moment; no keyboards, electronic tuners, not even a pitch pipe. Luckily, I recently did a rotation on the Neurology service and had the tools handy that are used for testing patients' vibration sense: tuning forks! Good patient care and a violin tuned to true pitch; it's a win-win.