The American composer and organist Frank Speller teaches organ and harpsichord at the University of Texas in Austin. He has degrees from the University of Colorado and Indiana University. About his music he writes: "Music has far greater power than merely to please or displease. Its capacity to bring inner richness and harmony has been commonly acknowledged throughout the history of music. J.S. Bach, for example, said that a good basso continuo was good for the soul. That is why the majority of my music is religious in nature. Even the Passacaglia is a description of the joy of something bigger than any of us. My intention is always present, even though it is sometimes realized in playful ways." The instrument used in this recording is one of the largest tracker-action organs in the United States: a musical and engineering feat which, if not for its quality of craftsmanship and sound, would alone mark it as noteworthy. A "tracker" is a flat strip of wood that conveys the action of the keyboard of "manual" directly to the organ pipes. Although many of the organ's functions are electronically controlled, such as the stop action and the computer memory piston system, the trackers are traditional wooden linkages whose origins date back at least 2000 years. The organ has 5,315 pipes that range from the giant 16 foot principals to pipes smaller than an ordinary pencil. The sound on this recording is astonishingly dynamic and realistic.