From Wikipedia the Free Encylopedia

Toprock generally refers to any string of steps performed from a standing position. It is usually the first and foremost opening display of style, though dancers often transition from other aspects of breaking to toprock and back. Toprock has a variety of steps which can each be varied according to the dancer’s expression (ie. aggressive, calm, excited). A great deal of freedom is allowed in the definition of toprock: as long as the dancer maintains cleanness, form and the b-boy attitude, theoretically anything can be toprock. Toprock can draw upon many other dance styles such as popping, locking, or house dance. Transitions from toprock to downrock and power moves are called drops.