The George Darden Piano and Opera Music Collection consits of bound sheet music, unbound sheet music, and personal papers (not yet processed). The sheet music contains annotation for Darden's various collaborations, espcially with the Houston Grand Opera and Metropolitan Opera. Highlights of the collection include Darden's performance notes relating to such performers as the Three Tenors, Renee Fleming, Marilyn Horn, Julius Rudel, Wilhelmenia Fernandez, and Sir Thomas Allen. The collection also features Darden's working copy of Porgy and Bess, including notes for musical preparation for the version conducted by Nikolaus Harnoncourt.