Live Music-Making: A Rich Open Task Requires a Rich Open Interface

Abstract

In live human-computer music-making, how can interfaces successfully support the openness, reinterpretation and rich signification often important in live (especially improvised) musical performance? We argue that the use of design metaphors can lead to interfaces which constrain interactions and militate against reinterpretation, while consistent, grammatical interfaces empower the user to create and apply their own metaphors in developing their performance. These metaphors can be transitory and disposable, yet do not represent wasted learning since the underlying grammar is retained. We illustrate this move with reflections from live coding practice, from recent visual and two-dimensional programming language interfaces, and from musical voice mapping research. We consider the integration of the symbolic and the continuous in the human-computer interaction. We also describe how our perspective is reflected in approaches to system evaluation.