An ambitious new series started in 1999 by DSCH, the exclusive publisher of the works of Dmitri Shostakovich. Each volume contains new engravings, articles regarding the history of the compositions, facsimile pages of Shostakovich's manuscripts, outlines, and rough drafts, as well as interpretations of the manuscripts. In total 150 volumes are planned for publication.

Orango is the unfinished satirical opera sketched in 1932 by Dmitri Shostakovich. The manuscript was found by Olga Digonskaya, a Russian musicologist, in the Glinka Museum, Moscow in 2004. The plan was for a prologue and three acts but only about a quarter, the Prologue, was sketched.

The Prologue was first performed in an orchestration by Gerard McBurney on 2 December 2011 in Los Angeles, California by the Los Angeles Philharmonic under Esa-Pekka Salonen (conductor) and staged by Peter Sellars (director).