Clive Strutt’s twelfth and final Gallus Cantata (part of his Voce Christianæ) is for unaccompanied choir(s) and soloists. It is subtitled Bollingen due to its link to the Swiss psychiatrist Carl Gustav Jung. Bollingen, on a shore of the upper Lake Zürich, is where Jung built a Tower on a parcel of land that had belonged to the abbey of St. Gallen.      The work is in three parts:           One is Tabula Smaragdina (‘The Emerald Tablet`). Two texts are concurrently set. One by Johannes Petreius (1541) and the other the antiphon O Paster Animarem by Hildegard von Bingen (transcribed by Pozzo Escot and arranged by Strutt himself).           Two is Missa da Requiem ―The Secret of the Golden Flower. Here the Roman plainchant texts of the Requiem Mass are set alongside several mystical lyrics some of which are of Taoist provenance.           Three is MAGNUS OPUS ―Cantilena of Sir George Ripley (1415-90) ―Canon of Bridlington. Ripley’s 38 verses are juxtaposed with texts of a wide range of mystical hymns that make a continuous reference to the various stages of the Alchemical Process.     The Cantata is on a large scale, lasting two and a half hours in performance.