Alfred Publications
A Progressive Lesson Plan for Four Mallets That Combines Technique, Theory, and Harmony By Phil Kraus

For vibes, xylophone, and marimba. Proper holding technique, up and down strokes, striking, pedaling and muffling are all studied. The bulk of the text is dedicated to in-depth harmonic lessons that are designed to reinforce proper techniques and advance improvisation skills for four-mallet performance. A must for keyboard percussionists of all styles of music.