This is the first of three music theory lessons. Normally you should be working through a music theory lesson, a registration lesson, and preparing a played assignment during the same time period. Studying music theory and organ registration together, while practicing for the played assignments, will offer a varied and well-rounded learning experience in organ playing.
Basic Materials in Music Theory
Read chapters 1 and 2, “The Basic Materials of Music: Time and Sound,” and “The Notation of Pitch.” As you study, set a goal to internalize each concept thoroughly. Study first, then work the mastery frames and supplementary assignments as needed.