The ACCompanion v0.1: An Expressive Accompaniment System
Carlos Cancino-Chac\'on, Martin Bonev, Amaury Durand, Maarten, Grachten, Andreas Arzt, Laura Bishop, Werner Goebl, Gerhard, Widmer

TL;DR
The paper introduces ACCompanion v0.1, an expressive MIDI accompaniment system that uses probabilistic and Gaussian models to track soloist performance and generate expressive musical responses.
Contribution
It presents a novel system combining score following, tempo updating, and expressive performance modeling for real-time MIDI accompaniment.
Findings
Effective real-time score tracking demonstrated
Expressive dynamics and timing are successfully integrated
System shows potential for live performance applications
Abstract
In this paper we present a preliminary version of the ACCompanion, an expressive accompaniment system for MIDI input. The system uses a probabilistic monophonic score follower to track the position of the soloist in the score, and a linear Gaussian model to compute tempo updates. The expressiveness of the system is powered by the Basis-Mixer, a state-of-the-art computational model of expressive music performance. The system allows for expressive dynamics, timing and articulation.
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Taxonomy
TopicsMusic Technology and Sound Studies · Neuroscience and Music Perception · Music and Audio Processing
