This poster focuses on the comparative user testing conducted to evaluate Reach, a gesture recognition system for live piano sound modulation. The user testing compares the Reach system with two existing keyboard-based systems for keyboard live sound modulation: ROLI Seaboard (Lamb and Robertson, 2011) and TouchKeys (McPherson, 2012). The study analyses ease of use, learnability and creative ... [Show full abstract] freedom, based on two jazz improvisations each on all three systems by the participants. This is presented along with user experience questionnaire (UEQ) data. The poster illustrates results from the test, focusing on the relationship between the learning curve and creative barrier in digital instruments and showing promising results for touch-free digital musical instruments (DMIs) like Reach. The comparative user testing taken into analysis is part of a larger research project that seeks to investigate how a low degree of invasiveness in digital systems for live sound modulation can reduce the learning curve and eventually make electronic music more accessible.