Haydn was a real hero to the young Mozart. And when Mozart wrote a set of "Haydn" quartets to honor his mentor, Haydn traveled to Vienna to play them with him. Mozart scholar Neal Zaslaw tells about that amazing meeting of titans. We follow that with Mozart's endearing letter to Haydn. And then the Fine Arts Quartet gives a performance of the final two movements of Mozart's fifth "Haydn" quartet, K. 464 in A Major.