"TWO" is a collection of 10 concert pieces for two-mallet marimba solo and a comprehensive guide to two-mallet technique and performance practice. This extensive book is a product of my mission to rejuvenate the art form and bring high level two-mallet performance to the concert hall. It is also, in many ways, the culmination of my 12+ years of research associated with two-mallet performance. (Gene Koshinski)