In this paper the framework of Computer Music interfaces is convolved within the context of Human Computer Interaction (HCI) to produce metaphors and paradigms that engulf differential tunings within adaptable mobile device screens. A presentation of the basic concepts involved in the Computer Music world prevails the discussion on the evaluation criteria for Computer Music virtual instruments and interfaces. New criteria are introduced, like knowledge representation of musical data and alternate musical interfaces materialization. A survey of various systems, based on the previously mentioned criteria is committed.