Clinton, forgive me if this is old advice.

I wouldn't say so much it works well in loud rooms as it works well even with significant background noise, which can include music. However, if there is music loud enough to vibrate the wood in your instrument, that's going to be picked up by the Intellitouch, making tuning difficult or impossible.

A common problem is low battery power. The tuner still works to a degree, but tends to be very slow and finicky. It takes two "disc" batteries, and the battery number is molded into the battery cover on mine.