Useful Ailment

One of my friends, a musician, is always upbeat. Nothing gets her down. But when she developed ringing in one ear, I was concerned it might overwhelm even her. When I asked if her condition was especially annoying to a musician, she shook her head. "Not really," she said cheerfully. "The ringing sound is in the key of B flat, so I use it to tune my cello a half-tone lower."