GW Rule #4       In the presence of others, sing not to yourself with a humming noise nor drum your fingers or feet.

PEEVES             In a quiet public place, shutteth up from making unnecessary noise.

MADAMA          Be aware of disturbing others in quiet places.

SANDRA            Oh dear, this is one I’m guilty of.  As a singer, I often hum without realizing it as melodies are often in my head.  I pledge to do better.  Americans; when we travel, we are often very loud on public transportation and indoor spaces.  It’s very annoying and disrespectful.  Let’s all try to do better.