Margaret Plucker and the Men of Note surprised her husband Bob Plucker with a very special song on his 90th birthday last week. As director of the singing group he had no idea members Dwight Nash, Jim Greene, Dana Hallett, Matt Davis, Mark Davis, Ben Cherry and Bill Brostehad secretly rehearsed a birthday version of “Coney Island Baby.” At the end of their regular rehearsal at the Haines Senior…