Stanley Drucker, the New York Philharmonic’s first clarinetist, “has played with the Philharmonic for the past 60 years, or nearly one-third of the orchestra’s history. When he retires at the end of June, he will have played in more than 10,200 concerts. And Drucker will be going out with a bang, including with one of his signature pieces, the Clarinet Concerto by Aaron Copland.”