Back in April 2014 at Carnegie's Zankel Hall, Augustin Hadelich's performance of David Lang's 'mystery sonatas' was praised by the New York Times as a riveting display of "magisterial poise and serene control." That same magic penetrates this starkly beautiful recording of the work, played by Hadelich on the exquisite 1723 "ex-Kiesewetter" Stradivari, on loan to him by it's current owners since 2011. Lang based his 'mystery sonatas' on the famous pieces by Heinrich Ignaz Franz von Biber, but with a modern twist. "I decided to make my own virtuosic pieces about my most intimate, most spiritual thoughts," he explains, "[but] mine are not about Jesus, and the violin is not retuned between movements. I did keep one of Biber's distinctions. He divides Jesus's life into three phases-the joyous, the sorrowful, and the glorious. The central pieces of my mystery sonatas are called 'joy,' 'sorrow,' and 'glory,' but these are all quiet, internal, reflective states of being."