Written for, premiered by and recorded by marimba specialist Nancy Zeltsman. Originally written in the late 1980's, this is the revised version from 2002 (with 'minor improvements' worked out with Zeltsman's input).

Each page of music is on a separate sheet, so music can be spread out (no page turns needed). Notation is done on the grand staff, suggesting suitable stickings--everything the right hand plays is on the upper staff; everything the left hand plays is on the lower staff--approved by Zeltsman. Aldridge describes this work as 'a theme and variations in the form of seven studies in perpetual motion.' The texture of the work is characterized by fast notes and rhytmic patterns, but with a melody running throughout.