Beethoven wrote his earliest piano concerto, the Piano Concerto in E-Flat Major WoO 4, in 1784-85. The surviving manuscript copy contains the solo part complete and a piano reduction of all orchestral passages (Tutti) whenever the soloist is not playing. That manuscript also includes Beethoven's cues for an instrumentation consisting of strings, horns and flutes. Eminent Beethoven scholar Willy Hess completed his own reconstruction of the concerto in 1943. His version has been recorded three times, but only one is currently available on the Philips label (442580-2). The newest reconstruction of the concerto, created by Professor Jon Ceander Mitchell in 2003, is presented in this study in the form of a piano reduction (as a two-piano critical edition). This present edition, edited by Dr. Mitchell and the author of this essay, retains Beethoven's instrumentation and restores the endings of the second and third movements (which were changed by Willy Hess). This study also includes a piano cadenza for the first movement, which is a free composition by the author. It also discusses both available restorations of this work and some of the concerto's interpretative issues.