The ACCompanion v0.1: An Expressive Accompaniment System

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.