Here’s how musicians coordinate silently during performance

AgenciesUpdated: Wednesday, May 29, 2019, 03:12 AM IST
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Toronto: Scientists have discovered a new technique to examine how musicians intuitively communicate with one another during a performance, silently predicting how each will express the music. The findings provide new insights into how musicians synchronise their movements so they are playing exactly in time, as one single unit. “Successfully performing music with a group is a highly complex endeavour,” said Laurel Trainor from the McMaster University in Canada. “How do musicians coordinate with each other to perform expressive music that has changes in tempo and dynamics?”

Accomplishing this relies on predicting what your fellow musicians will do next so that you can plan the motor movements so as to express the same emotions in a coordinated way. “If you wait to hear what your fellow musicians will do, it is too late,” she said. Researchers turned to the Gryphon Trio, an acclaimed chamber music ensemble.

Each performer was fitted with motion capture markers to track their movements while the musicians played happy or sad musical excerpts, once with musical expression, once without. Using mathematical techniques, the researchers measured how much the movements of each musician were predicting the movements of the others. Whether they were portraying joy or sadness, the musicians predicted each others’ movements to a greater extent when they played expressively, compared to when they played with no emotion.

“Our work shows we can measure communication of emotion between musicians by analysing their movements in detail, and that achieving a common emotion expression as a group requires a lot of communication,” said Andrew
Chang, the lead author on the study.

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