The Big 6 refers to the big 6 pathogens, which are: E coli, Hepatitis A, Nontyphoidal Salmonella, Norovirus, Shigella, Salmonella Typhi. Swine Flu is the only one not included.
By pressing you finger down on the string over the fingerboard. This shortens the string, which creates a higher frequency when the string is plucked or played.
Well the food could've been bad and he probably didn't get enough business or the workers could've been rude or even the cleanliness could've been horrible. Or he could've just wanted to shut it down.