Here we present some results obtained in Shapes, an evolutionary environment applied to artistic production in visual domain. In Shapes environment the user can interactively create and evolve visual compositions by using random variations of pre-programmed objects. Pixels of these compositions can be used in another evolutionary environment, ArTVox, to direct a sound sequence creating, in this way, “transgenic” visual-and-sound compositions. The genetic algorithm is described. Both environments, Shapes and ArTVox, were developed by the authors, in Java.