Anton Heiller is one of the twentieth century's most renowned and influential organists. Born in 1923, Heiller was trained in Vienna and rose to prominence quickly, giving his first solo recital at the age of twenty-two. Before concentrating on the organ exclusively, he was a successful conductor of the symphonic repertoire, and, from 1945 until his untimely death in 1979, he was professor of organ at the University of Music and Performing Arts in Vienna. His interpretations of Bach, which included registration and articulation, as well as a consideration of the theological underpinnings,...