Today, some of the important dilemmas of music education are that performers are too dependent on the notes in a written musical score and they are not being so able to improvise. Stage phobia, lack of motivation and problematic of perception regarding today's modern music are additional problems facing musicians. This research aims at revealing the effects of performer's works of Soundpainting, which is a universal, multi-disciplinary live composing sign language. In order to realize this aim, 16 h of workshop is conducted with Walter Thompson, the creator of Soundpainting language, and following that, a questionnaire is conducted with 21 participators. As a result, it is concluded that performers are inclined to perform via Soundpainting, their awareness towards their instruments/bodies/voices increased, within the group and as a Soundpainter, the performance increased their motivation. They are not disturbed by the music which came out as a result of the Soundpainting composition. Their awareness towards aleatoric music increased. Soundpainting performance helped them direct their attention and Soundpainting performance positively affected performer's psychomotor behaviors and improvisation skills.