I cannot remember the first time I took notice of a harp, but I must have been a very small child. In those days, it was not uncommon to see a symphony orchestra on television, and my eyes invariably went to the harp, the most exotic-looking thing on the stage, at least until the long-haired conductor came to the podium. The harp would usually be given its turn to shine, both visually and musically, in a fantastical waterfall of tones. And then there was “Mickey and the Beanstalk,” a segment of Disney’s 1947 film “Fun and Fancy Free,” with its Golden Harp character—a beautiful, singing woman whose back was somehow attached to the column of a harp. The role was beautifully sung by a popular teen star of the day, Anita Gordon. What a mesmerizing instrument! Famous for the harp, of course, was also Harpo Marx, one of the Marx …