Biber's 'Mystery' Sonatas (or 'Rosary' Sonatas) are a collection of 15 Sonatas reflecting on the Christian devotional prayer cycle based on the Rosary. Divided into 5 'Joyful Mysteries', 5 'Sorrowful Mysteries' and 5 'Glorious Mysteries' that meditate on the life of Mary. The cycle concludes with a Passacaglia in G minor, which is the work presented here in a transcription for solo Viola.