If you thought a fiddler on a roof was in a precarious position, imagine what happens when a middle-aged professor with a bad back takes up the cello. Ari Goldman hasn’t played in twenty-five years, but he’s decided to give the cello one last chance. First he secures a seat in his eleven-year-old son’s youth orchestra, and then he’s ready for the big time: the Late Starters Orchestra of New Yor...