Phase synchronization within and between the brains for the entire music sequence. Acoustic guitar traces (mic) and time-frequency diagrams of average PLI and IPC for guitarists A and B. For analysis, the entire sequence was subdivided into four consecutive sections of equal length. Only significant PLI and IPC values are shown (p < 0.01). The overall significance level was set to the mean value across the four sections. Time is locked to the play onset of the leading guitarist (Guitarist A). In contrast to Figures 1 and 2, the time-frequency diagram is restricted to the frequency range of up to 10 Hz. SL = significance level; Δ = 0.12.