Quatuor Diotima (former ensemble-in-residence at University of Chicago) celebrates the bicentennial anniversary of Anton Bruckner with a recording of his String Quartet in C minor, Rondo in C minor and, new to the library, the Theme with Variations in E-Flat, alongside the String Quartet in E-Flat from his pupil Friedrich Klose. Bruckner wrote these pieces as composition exercises, yet they …