Figure 1.

Illustration of the note onset timing traces of two typical pianists, showing only the right hand ascending scale timings. One pianist (CA) was recorded playing two-octave C-major scales. Using a previously established technique, we are able to determine the precise timing of each individual note (for further details see text). (A) The note-by-note temporal deviation (in ms) is strikingly similar between the two recordings (blue and green line). The red vertical bars and shaded area indicate the temporal distance between the traces, which is on average around 3 ms. (B) Comparison of CA’s temporal deviation trace with that of a different pianist (MD). The traces are qualitatively different, which is captured by a higher temporal distance of around 7 ms.