Musical Metacreation: Papers from the 2013 AIIDE Workshop (WS-13-22) Harmonic Navigator: A Gesture-Driven, Corpus-Based Approach to Music Analysis, Composition, and Performance 1 1 2 Bill Manaris , David Johnson , and Yiorgos Vassilandonakis 1 Computer Science Department, College of Charleston, 66 George Street, Charleston, SC 29424, USA,
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[email protected] 2 Department of Music, College of Charleston, 66 George Street, Charleston, SC 29424, USA
[email protected] Abstract We present a novel, real-time system for exploring harmonic spaces of musical styles, to generate music in collaboration with human performers utilizing gesture devices (such as the Kinect) together with MIDI and OSC instruments / controllers. This corpus-based environment incorporates statistical and evolutionary components for exploring potential flows through harmonic spaces, utilizing power-law (Zipf-based) metrics for fitness evaluation. It supports visual exploration and navigation of harmonic transition probabilities through interactive gesture control. These probabilities are computed from musical corpora (in MIDI format). Herein we utilize the Classical Music Archives 14,000+ MIDI corpus, among others. The user interface supports real-time exploration of the balance between predictability and surprise for musical composition and performance, and may be used in a variety of musical contexts and applications. Introduction Visual representation of musical structure is a quest that goes back to the beginning of Western music. By allowing “out-of-time” design, it has defined the development of art music in many ways. It has led to more intricate musical structures and better control of temporal and timbral space. For example, the development of a grid-based music Figure 1.