This volume presents a reconstructed and completed full score of Mozart's Mass in C minor, addressing missing sections through scholarly analysis. Richard Maunder, a recognized musicologist, utilizes his expertise in 18th-century composition to restore the Sanctus and Osanna movements while completing the orchestration for the Credo. The work serves as a critical edition intended for performance and academic study of Mozart's compositional intent.

Musicologists and conductors frequently cite Maunder's editions for their rigorous adherence to period-appropriate orchestration techniques. Experts highlight this text as a standard reference for ensembles seeking a historically informed yet performable version of the incomplete Mass in C minor.