The Recovering Choir Director

From the Roman Catholic Archdiocese of Westminster via NLM (links and emphases added):

James MacMillan has been commissioned to write two pieces: one for choir, organ, brass and timps, the other for choir a cappella.  Both are settings of texts from the pre-reformation rite of reception and installation of an Archbishop of Canterbury.

Other music will include 2 specially composed fanfares by Colin Mawby, a former Master of Music, and his setting of Ave verum corpus.  The mass setting is Palestrina’s Missa Tu es Petrus, and the offertory motet is an 8-part Venetian setting of Iubilate Deo by Giovanni Gabrieli The Te Deum is sung to gregorian chant alternating with a fauxbourdon by Victoria.

Visit both sites for more information on the Installation Mass.

Those interesting in viewing some of the existing scores may do so via the links below:

• Jubilate Deo by Giovanni Gabrieli: link to PDF score on CPDL
• Te Deum by Tomás Luis de Victoria: PDF score (direct download) from tomasluisdevictoria.org