Tony’s Music Box is a family-owned business that opened in 1975. (Malachi Lefurgey/AQ) After two generations of supplying musical instruments, tools and repairs to the city of Fredericton, Tony’s Music Box is putting away cords, picks and closing their guitar cases.    Matt Blanchard, a shop technician who has worked at Tony’s for nine years, was sad to see it go.   “None of us wants to close,” said Blanchard.  The store had faced financial difficulties, which worsened when t