Full Score, edited by Alois Schmitt

Thanks to Alois Schmitts supplements, the work became performable in its entirety for the first time in 1901. Basing himself on Mozarts sketches, Schmitt completed the instrumentation, which at times had not been definitely notated, constructed the Agnus Dei from the Kyrie of the Mass and compiled the missing parts of the Credo by borrowing from other works by Mozart.