WeproposeanonconventionalVJperformancesystemrhythmismwhichusesan original maraca based device that has 2 different functions, material maraca and effect maraca. Rhythmism uses the structure characteristic and the operating characteristics of maracas and adopts the interface to ensure the freedom of the user's physical movement and to realize the powerful attraction of the performance itself and aims to attain the multi-functionality and the arbitrary controllability. In this paper, we introduce the advantages and the interaction techniquesofthemaracasbaseddevicewhenusedforVJperformances. CategoriesandSubjectDescriptors H.5.2[UserInterfaces]:interactionstyles,inputdevicesandstrategies J.5:[ArtsandHumanities]:performingarts GeneralTerms Performance,Design,HumanFactors Keywords VJ,Performance,Maraca,Shaker,Interactiontechnique