Variation in one form or another is an inevitable aspect of human motor performance as the body negotiates the degrees of freedom problem while also adapting to ever-changing task constraints. The constraints to action model suggests that movement patterns arise from within a framework of environmental, task, and personal constraints. Like athletes, musicians adapt to a wide variety of constraints such as the presence and effect of spectators; acoustics in different performing spaces; humidity affecting tuning; and interpersonal interactions characterizing chamber and ensemble music. A crucial constraint particular to piano performance is adapting to the unique attributes of a wide variety of keyboard instruments. Pianists often refer to the distinct “feel” of a particular instrument: its responsiveness and sensitivity; key resistance; and the evenness and predictability of the instrument. Movement control both within and across pianos is essential for optimal performance, and in that sense, each instrument presents a type of task constraint. In this study, seven pianists performed 10 bimanual, two-octave, C major scales on 3 different piano keyboards to facilitate comparison of performance characteristics across instruments. Pianists performed 4 keystrokes per second, paced by a metronome set at 60 BPM. No timing differences were observed among keyboards as consistent patterns emerged, specifically anticipatory adjustments prior to thumb strokes. These results suggest that pianists are able to produce performances of similar musical structure across different instruments.

A differential benefit of external focus of attention (FOA) relative to internal focus has been demonstrated across a wide variety of athletic and rehabilitative pursuits; however, very little research has been undertaken in the performing arts. Given the unique aesthetic context of the arts and obvious transdisciplinary parallels, particular attention is warranted. This study examines nine pianists’ pedaling while performing Bartók’s Romanian Folk Dance Sz. 56, No. 2, and directing attention to three different focus conditions relative to a baseline condition. Differences in global pedal use and technique emerged and appeared to be modulated by level of expertise and the length of time spent preparing the piece. The two most experienced pianists and the least experienced pianist demonstrated greatest consistency in pedaling, as measured by Z scores calculated across eight performance parameters. Results corroborate previous FOA research demonstrating performance variability when adopting different focus strategies. Implications include the need to deliberately align focus strategies in music training and performance. To the authors’ knowledge, this is the first study to examine performance effects of external against internal FOA on pianists’ pedaling. The critical conceptual aspect of the work is beginning to illuminate the relationships between a performer’s attention and motor output, and perceived artistic or musical effects.