Pianos are no different from any other musical instrument. You tune to an established frequency on each string, and if you’ve got a device with perfect pitch, you don’t even need ears.
Not really. A lap board slung between the armrests would let her carry even more than a regular waitress, to make up for any loss of speed. (Assuming the venue itself is fully accessible, as I said before.)
Those guys make bank!!!
I know a guy that started as a driver for production co.s, basically just sitting around in your car all day waiting to drive someone someplace, then he had 3 cars, and guys driving for him, then he bought a honey wagon. Says it was the best investment he ever made. Just drive it somewhere and let it sit there for days/weeks/months, earning you money, pay other people to service it, empty it. He stays at home with his kids in the fancy new house poop bought for him.
Made a bit of a kerfuffle because in order to play a wind or brass instrument, you have to push some with the gut, which is not exactly conducive to holding in farts. At the same time, everyone is working in very close quarters and everyone has to be able to breathe.
The couple actually lives in Levittown, PA but happen to work in Trenton. And I have toured the Case factory. It stinks plenty with or without someone farting uncontrollably.
There is also Devrom (bismuth subgallate) which works quite well and it is given to people who have had bariatric surgery. It binds to sulfur so while it doesn’t prevent gas, it does prevent it from smelling.