Mel Bay's Complete Book Of Improvisation, Fills, & Chord Progressions
Again I list a secular book, Mel Bay's Complete Book Of Improvisation, Fills, & Chord Progressions, simply because it is a great resource. In it, author Gail Smith systematically considers a variety of patterns to be used in conjunction with different chords (sound familiar) as a basis for improvisation. It focuses on right- and left-hand patterns in 3/4 and 4/4, as well as a short section on runs.
While secular in intent, this has many applications in sacred music. You had better buy it fast! The price has gone up $5.00 since I bought it a few years ago.
228 Pages. By Gail Smith. Mel Bay. ISBN 0-7866-1841-8.