In PJM, the "interpretation" is not just in the hands. The (facial expressions and body posture) are crucial for this specific song:
Signs for "tears in the eye" (łezka w oku) or "happiness" require distinct facial shifts to show the angel's empathy. Cultural Significance magda_aniol_koleda_dla_aniolka_interpretacja_w_pjm
The interpreter must match the lively, energetic tempo of the melody with their body movement. In PJM, the "interpretation" is not just in the hands