"As the title suggests, the material of this highly virtuosic piece goes through constant variations. The actual sounds of the drums and the natural techniques that occur from the mallets used (stick-bounces, mallet sliding on head-bends pitch, hands dropped down, dead stroke, etc.) really dictates the direction of the piece. This is ultimately all dependent on the player's unique hands but conformed to the limitations of each beater used. While every note is written out, there is a certain freedom allowed for each player, which makes this in some ways, an autonomous composition."
