I began work on a setting of Rorate for SATB and organ on the 9th of November.  The plan is to break the words into their usual 2 parts and then have the following form:

Intro - organ
Rorate (etc.) - Solo soprano and organ
Aperiatur (etc.) - SATB and Organ
Rorate.... Aperiatur... (etc.) Solo sop and SATB and organ

I completed the introduction by improvising on the 9th and then set the first section on the 13th.  I spent today setting the second section.