Fig. 2.

Experimental procedure. (a) A piano duo recording a performance (photo taken during a pilot test; note that for the experiment, the projector screen was switched off during recordings and landscape-oriented scores were used); (b) a diagram of the recording and data synchronization set-up involving a central clock and three computers; (c) eye tracking glasses fitted with markers for detection by the motion capture system (circled in white); and (d–e) frames captured by the eye tracking glasses worn by either performer during a clarinet duo performance (orange/blue circles indicate viewers’ gaze positions). (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)