Abstract
Comprovisador is a system designed to enable real-time mediated soloist-ensemble interaction, through machine listening, algorithmic procedures and dynamic staff-based notation. It uses multiple networked computers – one host and several clients – to perform algorithmic compositional procedures with the music material improvised by a soloist and to coordinate the musical response of an ensemble. Algorithmic parameters are manipulated by a conductor/composer who mediates the interaction between soloist and ensemble, making compositional decisions in real-time. The present text, an extended version of a paper presented at CMMR 2018, in Matosinhos, focuses on the notation interface of this system, after overviewing its concept and structure. A discussion is made on how rehearsals and live performances impacted the development of the interface.
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Notes
- 1.
Such is the case of “OMax”, a computer program capable of learning in real-time the typical characteristics of a musician’s improvisational style, as well as to play with him, in an interactive way [3].
- 2.
For example, Jason Freeman used colored LED light tubes to convey pitch and dynamics information to performers, in his work “Glimmer” [12].
- 3.
Before coining the term “Conduction”, Morris had used the term “Comprovisation” to define his performance practice [24]. This term (to which “Comprovisador” is a Portuguese derivative) was later used by authors such as Richard Dudas [10] and Sandeep Bhagwati [5] in other contexts but nonetheless referring to musical performance practices where both composed and improvised elements coexist.
- 4.
Pedro Louzeiro is a member of the Lisbon Soundpainting Orchestra.
- 5.
A paper discussing the control interface module and its application in mediating a comprovisation performance was presented at ICMC 2017 [20].
- 6.
A paper entitled “Improving Sight-Reading Skills through Dynamic Notation – the Case of Comprovisador” exploring this issue shall be presented at TENOR 2018 conference, taking place in Montreal, Canada.
- 7.
As a result of recent changes implemented in version 3.85 (explained in Sect. 5), quantization will now aim at eight 1/4 measures.
- 8.
See new video example of the score in action, made with versions 3.83 and 3.85 of Comprovisador.client (minutes \(3'36''\)–\(4'09''\) – this section was made with version 3.83):
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Acknowledgments
I should like to thank my supervisors Christopher Bochmann and António de Sousa Dias for their advice and continued support. This research is supported by FCT by means of a PhD studentship (POCH/EU).
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Louzeiro, P. (2018). The Comprovisador’s Real-Time Notation Interface (Extended Version). In: Aramaki, M., Davies , M., Kronland-Martinet, R., Ystad, S. (eds) Music Technology with Swing. CMMR 2017. Lecture Notes in Computer Science(), vol 11265. Springer, Cham. https://doi.org/10.1007/978-3-030-01692-0_33
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