April 23, 1986, is the day on which composer Harold Arlen died at the age of 81. Although one of the most prolific, successful and admired writers of popular songs in the U.S. in the 20th century (in 1980, officials at the American Society of Composers, Authors and Publishers estimated that 35 of Arlen’s 500-plus songs could be considered American “standards”), Arlen has long...