The Rosary (Mystery) Sonatas, even today, are considered the most extensive example of scordatura. From the Italian discordare meaning ‘out of tune’, scordatura is a technique whereby the strings are purposefully tuned differently from their usual arrangement. Here the usual G-D-A-E tuning, where the violin strings are consistently a perfect fifth apart, is only used for the opening Sonata and the closing Passacaglia. The other fourteen sonatas each have a different configuration of tuning. Compositionally this allowed Biber to obtain unusual chords, opening up a whole new spectrum of harmonic and textural possibilities. This fundamentally altered what a violin was and could be; its physicality as well as its voice was transformed.