Of Dinnerstein's performance of Beethoven's Op. 111 during the March 2007 Bach Festival of Philadelphia, The Philadelphia Inquirer raved: "Emotionally, intellectually and technically, this music couldn't be more demanding, and Dinnerstein's performance was in a league with any of the great Beethoven pianists of our time . . . I've heard Dinnerstein play fine performances, but none with the thunderbolt-hurling confidence of this one."