Performing parts have been added for Antonio Biffi's Miserere mei, Deus (WLSCM no. 15), edited by Don Fader. Originally published in 2009, this edition has been updated to include four instrumental parts: two violins, viola, and basso continuo.
The WLSCM relies largely on the voluntary efforts of scholars and expert musicians around the world. Performers interested in locating parts for works in the catalogue should contact the editor of the individual piece. Editors interested in providing parts for their works are encouraged to contact the Editor-in-Chief.