WARSAW (AP).- A collection of Frederic Chopin’s letters telling of the Polish composer’s daily life, from giving lessons to the hot chocolate he drank, have gone on display in Warsaw’s Chopin museum more than six decades after they went missing. The six letters written by Chopin to his parents and sisters back home in Warsaw in 1845-1848 are the centerpiece of an exhibit that opened Thursday. It will run for one month after which they will be made available to researchers. The collection also includes letters from the piano composer’s Scottish pupil Jane Stirling to Chopin’s sister, as well as other items, such as a ticket for a rehearsal concert on July 26, 1840. Although the contents of the letters were known to researchers, the originals were believed to have been lost or destroyed during World War II. “This is a great day for us. This is an invaluable collection that we have acquired,” museum curator Alicja Knast told