NEW YORK (AP) — It's a sad day for classical music lovers. New York City's last classical sheet music store is closing for good on Friday. Frank Music Company says poor sales due to scores being readily available online were to blame. The retail store on West 54th Street has supplied generations of instrumentalists, singers and composers with classical sheet music. Owner Heidi Rogers tells the Wall Street Journal (http://on.wsj.com/1vXuENq ) the number of customers she sees per day has dwindled from a high of 20 to two or three. The store opened in 1937.