In 1972, Robert Owen Lehman placed his renowned music manuscript collection on deposit at the Morgan Library & Museum. To celebrate his eightieth birthday, the Morgan will host a dazzling concert of piano works from his collection this Friday, December 2. Beginning at 6 PM, a selection of music manuscripts from the Lehman Collection will be on view in Pierpont Morgan’s Library. At 7:30 PM, pianist Jenny Chen will perform in Gilder Lehrman Hall compositions by Beethoven, Mendelssohn, Chopin, Ravel, Debussy, and Stravinsky. The concert launches a year-long display of manuscripts from Mr. Lehman’s archive of more than two hundred music autographs by composers from the eighteenth through the twentieth centuries. The installation—part of an ongoing rotation of works drawn from the Morgan’s collections called Treasures from the Vault—will change continuously throughout the 2016–17 season.