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Creating a shared musical interpretation: Changes in coordination dynamics while learning unfamiliar music together.

Emily A Wood^1,2, Andrew Chang^1,2,3, Dan Bosnyak^1,2

¹LIVELab, McMaster University, Hamilton, Ontario, Canada.

Annals of the New York Academy of Sciences

|July 12, 2022

Summary

Musicians coordinating in a string quartet improved their group similarity and reduced information flow as they learned new music. This enhanced coordination correlated with better performance quality, showing a shift towards synchronized musical expression.

Keywords:

body sway interpersonal coordination joint action music performance nonverbal communication

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Area of Science:

Cognitive Science
Music Psychology
Human Coordination Dynamics

Background:

Interpersonal coordination is crucial for achieving shared goals, often requiring learning and adaptation.
Ensemble musicians synchronize low-level timing and high-level aesthetic expressions through practice.
Understanding the dynamics of learning and coordination in musical ensembles is key to unlocking principles of human collaboration.

Purpose of the Study:

To investigate changes in coordination dynamics within a professional string quartet during the learning of unfamiliar musical pieces.
To quantify the evolution of group similarity and information flow across multiple rehearsal trials.
To explore the relationship between coordination dynamics and performance quality.

Main Methods:

Recorded body sway motion data from each musician in a professional string quartet over eight trials.
Quantified group body sway similarity using cross-correlation analysis.
Assessed interpersonal information flow using Granger causality on motion data.

Main Results:

Group body sway similarity significantly increased across the eight trials.
Interpersonal information flow significantly decreased across the eight trials.
A trend indicated that increased group similarity, but not information flow, was associated with higher performance quality.

Conclusions:

Ensemble learning in musicians leads to a transition from adaptive interpersonal information exchange to more synchronized coordination.
The convergence on a shared musical interpretation is reflected in the body sway dynamics, moving towards internal, expressive synchrony.
These findings offer insights into the neural and behavioral mechanisms underlying successful human collaboration and skill acquisition.