Artificial Intelligence Music Platform for Piano Majors Improves Learning and Reduces Anxiety: Randomized Study with Heart Rate Variability Cues

= 0.206) and lower post-intervention state anxiety (t(38) = -3.486, p = 0.001; Cohen's d ≈ 1.10) than controls, with HRV patterns providing physiological context and secondary cognitive-load outcomes indicating reduced extraneous load.