This paper discusses the new harmonic possibilities enabled through the implementation of Sethares’ theory of the dissonance curve in Max/MSP and its use in a live electronic composition by two of the authors.

We present the Musical Gestures Toolbox, a collection of Max/MSP/Jitter modules to help in qualitative and quantitative analysis of musical gestures. Examples are shown of how the toolbox is used for studying musical mimicry, such as ”air piano” performance, and expressive gestures of musicians.