Signed musical score: Rhapsody in Blue (piano solo version). First edition. New York: Harms, Inc., 1927. Softcover, 9 x 11.75, 31 pages. Boldly signed in fountain pen on the title page, “Sincerely, George Gershwin.” The score is housed in a deluxe custom chemise and quarter-blue morocco slipcase. A very mild touch of handling wear, the subtlest suggestion of toning, and a few center pages pulled loose from the staples, otherwise fine, fresh, immaculate condition. A beautiful, blue-chip, virtually unbeatable signed copy of one of the milestones of twentieth-century American music! LOA John Reznikoff/PSA/DNA and R&R COA.